it will work on o2 and with o2 top up cards, the reason it displays bt
cellnet and not o2 is because of the sim, for some reason the sim is
programmed with names for the networks and it cant update the name as
such.
If it bothers you so much ring up o2 and ask them for a new sim card
explain you are having problems with the sim card not functioning
properly and problems locking onto the network with it, can you have a
new sim but keep your number. They will send you a new sim card, when
you receive it ring them back up give them your old sim card number
and your mobile number plus the new sim card number it will take
anything from a minute to a day for your new card to be activated with
your existing mobile number, once activated it will display o2 and not
bt cellnet. I found this out after months of being told to download a
logo which its not (I know this as i have a sony ericsson where
network logos are not accepted but a name is displayed instead).
You will probably find with your existing sim it will display t mobile
as one 2 one when you do a scan for other networks, if this is the
case then im 100% correct in what im saying by saying a new up to date
sim is needed.
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