Not able to use phone

Question

I tried updating my iphone 4s with the ios 8.3 and I got a message on my screen that said plug into iTunes and I cant get out of the message like it takes up my whole screen and whenever I reset my phone or turn it off the message is still there and I cant use my phone , cause the update isn't working on my phone im stuck with the same message on my phone and I cant use it please help I need my phone to work

Answer 1

Hi
The only test you can do (as recommended by BT Retail call centre) is to unplug everything from all of your telephone sockets. this must include any DIY extension kits, double adaptors, extension cables/leads. as well as sky boxes, routers, alarms, phones, answering machines, care alarms.
Then plug a known working corded telephone into  the main socket ( or what you think is the 1st socket on the system from where the line comes into your premises)
Make a couple of outgoing calls, get someone to call you.
Is there noise on the call?
Does the phone actually ring or does it "trip"
As long as you have done as much as can to prove the fault is not in your premises you "should" not be charged for the visit.
However, to cover themselves the BT Retail Call centre will always read the standard message about call out charges.
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