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Repair information and guides for the Apple iPhone 5s that was announced on September 10, 2013. Model: A1533, A1453, A1457, A1528, A1530, A1518

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No service on iPhone 5s

I bought a used iPhone 5s and it was meant to be unlocked. I put in my 3 network SIM card and it says 'sim not supported' and it does not let me use the phone. When I put in my O2 network SIM card it lets me use the phone, starts searching however it says 'no service' in the top left of the screen. What I tried:

1. I tested both SIM cards in a different phone and they worked.

2. Resetting network settings.

3. Rebooting the phone.

I did a lot a research on forums but can't find an answer. The phone gets very good WIFI signal so I don't think it's an antenna. And when I put in that 3 network sim it says 'sim not supported' however it shows three circles in the top left corner so I'm not sure if that means 3 bars of signal. The IMEI is: 352054062049680

Answered! View the answer I have this problem too

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I messaged the seller since I bought it from eBay. Haven't got a reply within 1 day. So I opened a case because I can't wait as I don't have a working phone at the moment. I will sort it out with the seller maybe they know what network it was used on or I will return it and get refunded.

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Phones network locked.

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Agreed with Ben your phone is carrier locked to 02 or a virtual network that piggy backs on O2.

You'll get No Service in the top corner when the O2 sim is in the phone until you perform a carrier settings update. Go to settings and about then you should get a message pop up to install one (when connected to wifi) or connect to iTunes a click check for update. If you are still not getting any service the you need to look at other issues.

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Dom will be eternally grateful.
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