Symptoms
- SIM tray shows a cracked or bent card
- Phone detects the SIM inconsistently
- SIM stopped working after being dropped or bent while removing
- Gold contacts on the SIM look scratched or discolored
Likely causes
- CommonSIM cut incorrectly when trimming to a different sizeManually cutting a SIM to fit a smaller tray size is risky and can damage the chip.
- CommonPhysical bending or cracking from mishandlingSIMs are thin and can crack if bent while being removed or reinserted.
- PossibleCorrosion or contact damage from moistureLiquid exposure can damage the SIM's small circuitry.
- PossibleNormal wear after years of use and multiple removalsRepeated insertion and removal can wear down the contacts over time.
What to do
- Inspect the SIM carefully for visible cracks, bends, or contact damage.
- Avoid trying to bend a damaged SIM back into shape, since this usually breaks it completely.
- Contact your carrier for a free or low-cost replacement SIM with the same number, which is standard and quick.
- Avoid manually cutting SIM cards to a different size; request the correct size (nano, micro, standard) directly from your carrier instead.
- Once you have a new SIM, follow your carrier's activation steps, which are usually straightforward for a same-number replacement.
Tools and parts
- SIM ejector tool
Replacement SIM cardSearch: “replacement SIM card [your carrier name]”
When to call a pro
Getting a replacement SIM from your carrier (in-store or mailed) is the standard fix; no independent repair exists for a physically damaged SIM chip.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.