If you can't make a call or if you see an error message that your phone's SIM card is not working, there are several ways to ...
To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.
Nigeria has given telecommunication providers an extra eight weeks to add valid National Identification Numbers (NIN) to every SIM card registered in the country, according to a statement from the ...
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