08-24-2015 11:12 AM
My phone will not change voicemail from o2 to giffgaff 443. I change the number but it automatically resets to 901 when power cycled. It was bought direct from Motorola so not locked to any particular network...
08-25-2015 07:25 AM
This seems to be a common problem with Giffgaff that is using the O2 network - try changing it using the dialer codes http://community.giffgaff.com/t5/Using-giffgaff/Your-voicemail/ta-p/3521085#faq_no_1
the short 3 digit codes to turn VM off then on. If this doesn't work, you will probably have to contact Giffgaff - i see lots of complaints about this with many brands of phones.