The Apple iPhone 5s was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, or 64 GB / Silver, Gold, and Space Gray.

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Why my phone sometimes doing no sim or no service?

I have done my 5s screen replacement recently. After replacement, everything works just fine. After a few days, it was starting to do no service and then no sim installed. Sometimes, it became normal again after a hard reset. Sometimes, it needed reboot. I tried putting another sim card. It showed the same error. When it became normal, after a few hours it started doing no service and no sim card insalled again. I have to do a hard reset every time it becomes. Sometimes, even hard reset and reboot cannot solve the error. I have to wait a few hours to become normal again. Please help me!

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Hello,

I would suggest you re open the phone and inspect the SIM contacts. If any of them are bent or displaced attempt to put them into place with some tweezers. If everything looks right, swabbing down the contacts with some rubbing alcohol.

Let me know if that works

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Yeah. It worked. Now it is not doing again. Thank you..

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You're welcome.

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did you do it yourself the screen replacement or a company

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Myself. I followed the instructions specifically and I didn't damage any part. May be I did damage I didn't notice. I am not sure.

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zinminht3t will be eternally grateful.
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