SIM Card Not Detected? Try These Fixes First — Then Here’s When It’s Actually a Hardware Problem
A “No SIM” error cuts you off from calls, texts, and mobile data instantly. The frustrating reality is that most people head straight to a repair shop — or worse, buy a new phone — when the fix is completely free. This guide tells you exactly what to try first, how to diagnose the actual fault, and when it really is a hardware problem that needs professional attention.
📋 What This Guide Covers
- The three failure points that cause “No SIM” — SIM card, SIM reader, or baseband — each needing a different fix
- The free carrier SIM swap that fixes more cases than any repair — and why most people don’t know to try it first
- The Brisbane humidity contact corrosion fix — a 30-second pencil eraser trick that restores SIM connection
- The eSIM conflict that causes physical SIM detection failure on iOS 16+ and Android 13/14
- No SIM vs No Service — the critical difference that tells you whether the fault is SIM, antenna, or network
- The after-drop antenna disconnection that mimics a SIM fault but needs a completely different repair
- Complete 7-step troubleshooting sequence — from free fixes to professional diagnosis
The Three Failure Points Behind Every “No SIM” Error
Before touching anything, understand which layer of the system is actually broken. A “No SIM” error looks identical on screen regardless of which of the three failure points is responsible — but the fix is completely different for each.
The SIM Card Itself
The SIM card contains a microchip and gold contacts that degrade over 3–5 years. The chip can develop read errors; the contacts oxidise in Brisbane’s humidity. Test by inserting the SIM in another phone.
✅ Fix: Free SIM replacement from Telstra, Optus, or Vodafone.The SIM Card Reader
The hardware slot inside the phone that reads the SIM. Can be damaged by drops, liquid, or forced insertion. The SIM may work in another phone but not this one.
⚠️ Fix: SIM reader repair or replacement. From $69 at Mobile Connect.The Baseband Processor
The chip on the motherboard that manages all radio communications — cellular, WiFi, Bluetooth. Baseband failure means the phone can’t communicate with any SIM reader output. Usually requires motherboard repair.
🔴 Fix: Professional diagnosis required. Complex motherboard repair.Software / eSIM Conflict
A corrupted eSIM profile or OS bug preventing physical SIM detection. Presents identically to hardware SIM failure. Common after iOS 16/17 and Android 13/14 updates.
💡 Fix: Settings change or software update. Free.The most important first step is determining which failure point you have — because spending $69 on a SIM reader repair for a SIM that can be replaced for free at your carrier store is a waste of money. Work through the free and low-cost fixes first, in the order below.
The Complete 7-Step Fix Guide — Free Fixes First
Restart the Phone Completely
Power the phone off fully — not just lock it. Wait 30 seconds, then restart. Some SIM detection failures are transient software glitches where the baseband firmware loses communication with the SIM reader after a background process crash. A full restart re-initialises the baseband and often resolves a one-time “No SIM” error. If the error comes back after restart, move to step 2.
Remove, Clean, and Reinsert the SIM Card
Eject the SIM tray using the SIM tool (or a straightened paperclip in the tray hole). Remove the SIM card. Look at the gold contact pads on the back of the SIM — they should be bright gold. If they look dull, cloudy, or have any discolouration, they have oxidised.
Gently rub the gold contacts with a clean pencil eraser (the rubber type, not a plastic eraser — rubber is mildly abrasive and removes the oxide layer without damaging the contacts). Blow any debris from the SIM slot using a can of compressed air or by blowing firmly. Reinsert the SIM firmly until the tray clicks. Restart and test.
This step is particularly important in Brisbane, where subtropical humidity causes gold contact oxidation at a higher rate than in drier Australian cities. The pencil eraser technique restores electrical contact in many cases where the SIM itself is functional but the contacts have a thin insulating oxide layer.
Test the SIM in a Different Phone
This is the single most useful diagnostic step — and the one most people skip. Insert your SIM card into a different phone (borrow a family member’s or friend’s compatible device). If the SIM works correctly in the second phone, the fault is the original phone’s SIM card reader — not the SIM card. If the SIM doesn’t work in the second phone either, the SIM itself has failed.
Make sure the second phone takes the same SIM size (Nano-SIM is standard on all modern phones). Also ensure the second phone is on the same network or is unlocked — a Telstra-locked phone won’t read an Optus SIM regardless of whether both are functional.
The result of this test determines everything that follows. SIM works in another phone → skip to Step 6 (hardware diagnosis). SIM doesn’t work in another phone → proceed to Step 4.
Get a Free SIM Replacement From Your Carrier
This is the most commonly missed fix — and it resolves a significant number of “No SIM” cases at zero cost. Physical SIM cards have a lifespan. The microchip inside degrades after years of thermal cycling (heating and cooling with the phone). The carrier authentication data can become corrupted. A SIM that worked for 3–4 years and then stopped is very often simply a degraded SIM, not a phone hardware fault.
Walk into any Telstra, Optus, or Vodafone store with your account details (or the account holder if it’s a family plan). Ask for a SIM replacement. It is free on all major Australian carriers. Your number, contacts stored in the cloud, and account plan are all preserved — only the physical card changes.
Telstra stores are located throughout Brisbane including Carindale and Garden City, convenient to our Underwood and Sunnybank Hills customers. Optus and Vodafone stores are similarly distributed. The replacement takes approximately 15 minutes and activates almost immediately.
If a new SIM from the carrier doesn’t resolve the “No SIM” error in your phone, the fault is definitively in the phone hardware — proceed to Step 6.
Check for an eSIM Conflict
This is the cause unique to phones running iOS 16 and later, or Android 13 and 14 on dual-SIM capable devices. When an eSIM profile is active and becomes corrupted — or when the OS incorrectly assigns the primary SIM slot to the eSIM rather than the physical SIM slot — the phone can fail to detect the physical SIM even though the hardware is completely functional.
On iPhone: go to Settings → Mobile Data → tap on your plan name. If you see both a Physical SIM and an eSIM listed, check which is set as Primary. If the eSIM is Primary and shows an error state, try Settings → Mobile Data → [eSIM plan] → Delete eSIM. After deleting, check whether the physical SIM is now detected. You can re-add the eSIM later.
On Android (Samsung): Settings → Connections → SIM Card Manager. Check whether dual SIM mode is correctly configured. If an eSIM entry shows an error, disable or delete it and retest the physical SIM.
On OPPO / Vivo / Xiaomi: Settings → Network → SIM Management. If a secondary eSIM slot shows an error, disable it. Some MIUI/HyperOS versions have a bug where a failed eSIM download attempt locks the physical SIM slot — deleting the failed eSIM profile resolves this.
Check for a Carrier Settings or Software Update
Carrier settings updates — separate from OS updates — contain network configuration data that affects SIM authentication and baseband firmware behaviour. A pending carrier settings update can cause SIM detection instability.
On iPhone: connect to WiFi, go to Settings → General → About. If a carrier settings update is available, a prompt appears automatically — tap Update. Also check Settings → General → Software Update for any iOS update. On Android: Settings → Software Update → check for both OS and carrier updates. Samsung phones sometimes receive separate carrier firmware updates via Settings → Software Update on a Telstra or Optus-branded device.
Also try toggling Airplane Mode on for 30 seconds, then off. This forces the baseband to re-register with the network and re-initialise the SIM connection without a full restart. It resolves intermittent SIM detection issues more often than expected.
Seek Professional Diagnosis at Mobile Connect Brisbane
If none of Steps 1–6 resolved the “No SIM” error, the fault is hardware — either the SIM card reader inside the phone has been physically damaged, or in more serious cases the baseband processor or its surrounding circuitry has failed. Both require professional assessment to distinguish and repair correctly.
At Mobile Connect Brisbane in Underwood Marketplace and Sunnybank Hills Shopping Town, SIM fault diagnosis is free. We assess the SIM reader contacts under magnification, test the slot with a known-good SIM, and confirm whether the fault is a reader mechanical issue (repairable from $69), a connector reseat after a drop, or a baseband-level issue requiring motherboard assessment. We quote before doing any work.
Worked through all 7 steps and still getting No SIM?
Free hardware diagnosis at Mobile Connect Brisbane — Underwood Marketplace and Sunnybank Hills. We identify the exact fault before quoting any repair. SIM reader repair from $69.
Why Brisbane’s Climate Causes More SIM Contact Failures Than Other Australian Cities
Brisbane’s subtropical climate — with average relative humidity between 55% and 70% year-round, and summer humidity regularly exceeding 80% — creates a significantly more corrosive environment for the gold electrical contacts on SIM cards and SIM trays than the conditions in Melbourne, Sydney’s drier western suburbs, or Perth.
Gold contacts on SIM cards are not pure gold — they are gold-plated copper alloys. In high-humidity environments, the underlying copper alloy can develop surface oxidation through the thin gold plating, particularly at microscopic scratches and wear points that accumulate over years of SIM insertion and removal. This oxidation creates a thin, electrically insulating layer that prevents reliable contact between the SIM card’s gold pads and the SIM tray’s spring pins.
The result is a SIM that reads intermittently — sometimes detected on startup, sometimes not — or a SIM that fails to be detected after the phone has been in a humid environment such as a bathroom, gym bag, or car in summer. The SIM itself hasn’t failed at the chip level. The contacts just aren’t making reliable electrical contact due to surface oxidation.
✅ The Brisbane SIM Contact Cleaning Method
- What you need: A standard pencil with a rubber eraser tip. That’s all.
- What to do: Remove the SIM from the tray. Hold the SIM with the gold contacts facing you. Gently rub the eraser across the gold contact pads using light pressure — 5–8 strokes is sufficient. The eraser’s mild abrasive action removes the oxide layer without scratching the underlying gold plating.
- Also clean the tray: Use a cotton bud very lightly dampened with isopropyl alcohol (70%+ concentration) to clean the SIM tray’s spring contact pins. Let it dry completely before reinserting the SIM.
- Prevention: If your phone spends time in humid environments (gym, outdoor work, bathroom steam), store it in a case with good sealing around the SIM tray. Consider enabling WiFi calling so brief SIM disconnections don’t cut your calls.
No SIM vs No Service — These Are Different Problems With Different Fixes
One of the most common misdiagnoses in phone network issues is confusing “No SIM” with “No Service.” They look similar — both result in no calls or data — but they are completely different faults with completely different causes and fixes.
| What Screen Shows | What It Means | Common Causes | First Step |
|---|---|---|---|
| “No SIM” / “Invalid SIM” / “SIM Not Installed” | Phone cannot detect or read the SIM card at all | Degraded SIM chip, oxidised contacts, damaged SIM reader, eSIM conflict, baseband fault | Follow Steps 1–7 above |
| “No Service” (carrier name visible or blank signal bars) | Phone detects the SIM correctly but cannot connect to the cellular network | Network coverage gap, account suspension, antenna disconnection after drop, baseband software bug, phone locked to different carrier | Call carrier from WiFi calling to check account status; test in a different location for coverage |
| “Searching…” (iOS) or spinning signal indicator | Phone reads the SIM but cannot find or lock onto a cell tower | Antenna cable disconnection after drop, weak coverage area, carrier network outage, baseband firmware bug | Toggle Airplane Mode on/off; check carrier coverage map; if post-drop, antenna assessment needed |
| Carrier name shows but calls fail / data won’t connect | SIM and antenna working; network registration failing | Account payment issue, network APN settings wrong after carrier update, carrier authentication problem | Call carrier; check APN settings in mobile data settings |
The After-Drop “No Service” Fault That Gets Misdiagnosed as a SIM Problem
This is the fault that costs people unnecessary money — because it looks like a SIM problem but requires a completely different repair.
Inside every phone, the baseband processor connects to the phone’s cellular antennas via a thin coaxial cable with a small push-fit connector. This connector sits near the phone’s frame, close to where most drops make impact. A drop — even one that doesn’t crack the screen — can transmit enough shock through the chassis to dislodge this antenna connector. The baseband processor can still detect and read the SIM card correctly, but it can’t transmit or receive cellular signals because the antenna is disconnected.
The result: the phone shows the carrier name (SIM detected), but “No Service” or zero bars permanently. WiFi still works. Bluetooth still works. The SIM card appears detected in settings. But no calls, no SMS, no mobile data — regardless of location.
How to Tell an Antenna Disconnection from a SIM Fault After a Drop
🔴 Antenna Disconnection (After Drop)
Shows carrier name in status bar but “No Service” signal. SIM shows as detected in Settings → Mobile Data or SIM Card Manager. WiFi and Bluetooth work normally. GPS may still work. Problem started immediately after a specific drop. Same SIM works with calls/data in another phone. Fix: antenna connector reseat inside the phone — not a SIM replacement or SIM reader repair.
⚠️ SIM Reader Damage (After Drop)
Shows “No SIM” or “Invalid SIM” — phone cannot detect SIM at all. Carrier name not shown. SIM works in another phone. Problem started after a drop. The drop damaged the SIM tray mechanism or dislodged the SIM reader connector from the motherboard. Fix: SIM reader inspection and repair or connector reseat — from $69 at Mobile Connect Brisbane.
💡 How to Tell Them Apart
Check Settings → Mobile Data (iPhone) or Settings → Connections → SIM Card Manager (Android). If your SIM card name and phone number are listed — SIM is being detected, antenna is the fault. If the SIM slot shows empty or “No SIM” — the reader isn’t detecting the card, reader damage is the fault. These two diagnoses lead to completely different repairs, so confirming which is your situation before visiting a repair shop saves time and conversation.
⚠️ Don’t Replace Your SIM if Your Phone Shows the Carrier Name
If your phone’s status bar shows the carrier name (“Telstra,” “Optus,” “Vodafone”) but has zero signal bars or “No Service” after a drop — the SIM is being detected. Replacing the SIM card will not fix this. The fault is almost certainly an antenna connector dislodgement from the drop. Bring it to Mobile Connect Brisbane for an antenna connector inspection — free diagnosis, and antenna reseat or cable replacement starts from $69 for most models. Do not spend $30 on a new SIM for a problem that isn’t the SIM.
Phone shows carrier name but “No Service” after a drop?
That’s an antenna disconnection — not a SIM fault. Free diagnosis at Mobile Connect Underwood and Sunnybank Hills confirms the cause. Antenna reseat from $69. Most repairs same day.
When It Is a Hardware Fault — What’s Actually Broken and What It Costs
The SIM Card Reader — the Most Repairable Hardware Fault
The SIM card reader (also called the SIM card socket or SIM tray reader) is a small electromechanical component mounted on or connected to the motherboard. It contains spring-loaded contact pins that press against the SIM card’s gold pads when the tray is inserted. Several things can cause this component to fail.
Liquid damage to the SIM reader
Water, sweat, or condensation entering the SIM tray area causes corrosion on the contact pins. Corrosion builds an insulating layer that prevents electrical contact. Sometimes develops gradually over weeks after initial liquid exposure rather than immediately. Liquid damage assessment is the correct first step.
Drop damage — bent contact pins
A drop can physically bend the spring contact pins inside the SIM reader, preventing them from making reliable contact with the SIM’s gold pads. Often presents as intermittent SIM detection — the phone detects the SIM sometimes but loses it when moved or flexed. Reseating or replacing the SIM reader typically resolves this.
Dislodged SIM reader connector
The SIM reader connects to the motherboard via a small flexible cable with a push-fit connector. A drop can dislodge this connector, severing communication between the reader and the baseband processor. Reseating the connector — a common repair that takes 20–30 minutes — often restores full SIM detection without replacing the reader itself.
Worn-out SIM tray mechanism
On phones with high SIM swap frequency — dual-SIM users who change SIMs for travel — the ejection mechanism and tray alignment can wear over time. A misaligned tray means the SIM doesn’t sit in the correct position for reliable contact. A replacement SIM tray (the physical metal tray, not the reader) solves this and costs $10–$20 plus fitting.
Baseband Processor Failure — the Serious Fault
The baseband processor is a dedicated chip on the phone’s motherboard that manages all radio communications — cellular (4G/5G), WiFi, Bluetooth, and GPS. It’s separate from the main application processor (the chip that runs your apps) but sits on the same motherboard. Baseband failure is the most serious SIM-related fault because it cannot be repaired by replacing the SIM reader — the failure is at chip level.
Signs that point toward baseband failure rather than a SIM reader fault: the “No SIM” error persists with multiple known-good SIM cards from different carriers. WiFi and Bluetooth also show connectivity instability or have failed simultaneously (all managed by the baseband). The phone gets unusually hot in the area of the baseband chip during use. The fault appeared after severe liquid submersion rather than surface splash.
Baseband processor failure requires motherboard-level diagnosis. In some cases, a baseband firmware reflash resolves what appears to be a hardware failure — the chip itself is functional but its firmware has become corrupted. In other cases, the chip itself has failed and motherboard repair or replacement is required. At Mobile Connect Brisbane, the free diagnosis distinguishes a SIM reader fault from a baseband fault before any repair cost is committed.
🔴 Signs Your “No SIM” Is a Baseband Issue, Not a SIM Reader Issue
- Multiple different SIM cards from different carriers all show “No SIM” in this phone
- WiFi or Bluetooth also showing instability or complete failure simultaneously
- The phone was submerged in water (not just splashed) before the SIM fault appeared
- The “No SIM” error appeared after a significant impact — not just a normal drop
- The phone’s network settings show no carrier options at all, even in manual search mode
- Error appeared after a failed OS update that got stuck partway through
SIM Detection Issues by Phone Brand — What We See at Mobile Connect Brisbane
| Brand / Model | Most Common SIM Fault | Free Fix to Try First | Hardware Repair If Needed |
|---|---|---|---|
| iPhone 12 / 13 / 14 | eSIM conflict after iOS 16/17 update displacing physical SIM slot assignment | Settings → Mobile Data → disable or delete conflicting eSIM plan; carrier settings update | iPhone SIM reader repair from $69 |
| iPhone 7 / 8 / X / 11 | SIM reader contact pin corrosion from liquid exposure; Brisbane humidity oxidation on older SIM cards | Clean SIM gold contacts with pencil eraser; free carrier SIM replacement | SIM reader replacement from $69 at Mobile Connect Brisbane |
| Samsung Galaxy S21 / S22 / S23 | Antenna connector dislodgement after drops showing “No Service” misdiagnosed as SIM fault | Check if carrier name shows — if yes, it’s antenna not SIM; test SIM in another phone | Samsung antenna / SIM repair from $69 |
| Samsung Galaxy A32 / A52 / A53 | SIM tray misalignment from worn tray after frequent SIM changes; oxidised contacts | Clean contacts; try SIM in new position in tray; check tray for physical bends | SIM tray replacement from $39; SIM reader repair from $69 |
| OPPO A-series / Reno series | Dual SIM slot 2 failing before slot 1 — SIM detection errors often occur on the second slot only | Move SIM to slot 1; check Settings → SIM Management for slot assignment | OPPO SIM repair from $69 at Mobile Connect |
| Vivo Y-series | SIM reader connector dislodgement from drop — common given Vivo Y-series’ light chassis construction | Check if fault began after drop; test SIM in another phone | Vivo SIM reader repair from $69 |
| Xiaomi / Redmi | MIUI/HyperOS eSIM bug after system updates locking physical SIM slot; also SIM contact oxidation | Settings → Network → SIM Management — delete any failed eSIM profiles; clean SIM contacts | Xiaomi SIM repair from $69 at both stores |
| Google Pixel 6 / 7 / 8 | eSIM profile corruption after Android security updates causing physical SIM detection failure | Settings → Network → SIMs — disable eSIM and retest physical SIM; check for Android update | Google Pixel SIM repair from $69 |
Found your phone in the table above? Know what to try first.
If the free fix doesn’t work, Mobile Connect Brisbane at Underwood and Sunnybank Hills has the parts and expertise for SIM reader repair on all major brands. Free diagnosis. From $69. Same day for most models.
A Word on eSIM — When Going Digital Solves a Physical SIM Problem
If your phone’s physical SIM reader has failed and the repair cost is significant relative to your phone’s value — or if you’re waiting for parts — there is a temporary workaround worth knowing: eSIM.
An eSIM (embedded SIM) is a digital SIM profile stored directly on the phone’s baseband processor, requiring no physical SIM card or SIM reader. If your phone supports eSIM (iPhone XS and later, Samsung Galaxy S20 and later, Google Pixel 3 and later, and many recent OPPO and Xiaomi flagships), and your carrier supports eSIM (Telstra, Optus, and Vodafone all support eSIM in Australia), you can transfer your number to an eSIM and use the phone normally while the physical SIM reader is being repaired — or as a permanent solution if the reader repair cost isn’t justified.
To activate eSIM in Australia: contact your carrier (Telstra, Optus, or Vodafone) and request an eSIM transfer. They issue a QR code or activation code. On iPhone: Settings → Mobile Data → Add eSIM → scan QR code. On Android: Settings → Connections → SIM Card Manager → Add Mobile Plan → scan QR code. The process takes 5–10 minutes and your existing number is preserved.
💡 eSIM Doesn’t Work if the Baseband Has Failed
eSIM is only a workaround for a physical SIM reader failure — it still relies on the same baseband processor that manages the physical SIM slot. If the baseband itself has failed (the more serious fault), eSIM will also fail to activate. The test: try activating an eSIM. If it activates successfully, your baseband is functional and the physical SIM reader was the fault. If eSIM also fails to activate, the baseband processor is the issue and requires professional motherboard assessment at Mobile Connect Brisbane.
Frequently Asked Questions
Why does my phone say “No SIM card installed”?
The most common causes in order of frequency: the SIM card has degraded after 3–5 years (free fix: carrier SIM replacement at any Telstra, Optus, or Vodafone store); the SIM’s gold contacts have oxidised (free fix: clean with pencil eraser); an eSIM conflict is preventing physical SIM detection (free fix: disable eSIM in settings); or the SIM card reader inside the phone is damaged (repair from $69 at Mobile Connect Brisbane).
Test your SIM in another phone first. If it works there, the fault is your phone’s hardware. If it doesn’t work in another phone, try the free carrier SIM replacement before any paid repair.
Can I fix a SIM card not detected error myself?
Yes, for software and contact-related causes. Restart the phone, clean the SIM’s gold contacts with a pencil eraser, test the SIM in another device, get a free replacement from your carrier, check eSIM settings, and toggle Airplane Mode. These steps resolve the majority of SIM detection failures and cost nothing.
If none of these work, the SIM card reader hardware has a physical fault that requires opening the phone — not a safe DIY repair without proper tools and experience. Free diagnosis at Mobile Connect Brisbane identifies the exact hardware fault before any repair is quoted.
My new phone doesn’t detect my old SIM — why?
Three likely causes. First, SIM size mismatch — older SIM cards were Micro-SIM size; modern phones use Nano-SIM. A Micro-SIM in a Nano-SIM slot won’t seat correctly and won’t be detected. Your carrier will cut or replace a Micro-SIM to Nano-SIM for free. Second, the old SIM is locked to a different carrier — a Telstra-locked SIM won’t work in an Optus phone. Third, the SIM is simply too old and has degraded — a new SIM from your carrier resolves this.
If the SIM is the correct size and the correct carrier, get a fresh SIM from your carrier before assuming the new phone has a hardware fault.
How much does SIM card reader repair cost in Brisbane?
SIM card reader repair at Mobile Connect Brisbane starts from $69 for most iPhone and Android models. This covers inspection, connector reseat where applicable, and reader replacement if the component has failed. Diagnosis is always free — we confirm the exact fault before quoting. Most SIM reader repairs are completed same day at our Underwood Marketplace and Sunnybank Hills Shopping Town stores.
If the fault turns out to be a free fix — a software setting, carrier SIM replacement, or contact clean — we tell you that during the diagnosis at no charge. No fix, no fee applies unconditionally.
Does dropping my phone cause SIM detection problems?
Yes, in two different ways. A drop can dislodge the SIM reader connector from the motherboard, causing “No SIM” errors — the phone can’t detect the SIM card at all. Alternatively, a drop can disconnect the cellular antenna cable from the baseband processor, causing “No Service” even though the SIM is detected — the phone reads the SIM but can’t connect to the network. These are different faults that require different repairs.
If your SIM problem started after a specific drop: check whether your phone shows “No SIM” (reader or baseband fault) or “No Service” with carrier name visible (antenna fault). Bring it to Mobile Connect Brisbane for free network fault diagnosis — we identify which component was dislodged and repair accordingly.
Will a factory reset fix a SIM not detected error?
Only if the cause is software — a corrupted baseband firmware, a severe eSIM conflict that settings adjustments haven’t resolved, or a system-level configuration corruption. A factory reset will not fix any hardware cause: a degraded SIM card, a damaged SIM reader, a corroded contact, or a baseband processor failure will all persist unchanged after a factory reset.
Before performing a factory reset — which erases all data — confirm that the fault is software by exhausting all the software fixes in this guide. If the SIM doesn’t work in another phone either, the SIM itself has failed and a factory reset won’t help. If the SIM works in another phone, the fault is the phone’s hardware and a factory reset won’t help. Factory reset is only worth attempting if Steps 1–6 have all been tried and the SIM works in another phone but not in your phone even after all software steps.
Phone Still Showing No SIM After All the Free Fixes? We’ll Find Out Exactly Why.
Mobile Connect at Underwood Marketplace and Sunnybank Hills Shopping Town diagnoses SIM detection faults for free — we test the SIM, the reader, the antenna connection, and the baseband before recommending any repair. SIM reader repair from $69. Most repairs completed same day. Walk-ins welcome seven days. No fix, no fee.