on 08-12-2015 00:16
on 08-12-2015 01:11
Hi @Ruggiechick Welcome to the forum. How long have you had the phone? If less than 28 days you can return it if its faulty and you would need to ring O2 to get it swapped http://www.o2.co.uk/contactus
If longer than this time then please get in touch with Samsung directly. (Better to deal with these than O2 repairers) http://www.samsung.com/uk/support/
Veritas Numquam Perit
on 08-12-2015 05:34
on 08-12-2015 05:34
If this is happening on 2 phones it could be a network issue. Check your postcode here
Also check if any case or screen protector is covering the microphone.
on 08-12-2015 06:57
on 08-12-2015 06:57
on 08-12-2015 08:20
on 14-12-2015 10:40