My son has a Sony Ericsson K750i on the Virgin network. We find that we have real trouble getting a signal in our house and have got some free sim cards from various other network provideres to see if we can get better reception with them.
Today my son put a T Mobile sim card in his phone but he found that the signal was just as bad so he took it out and inserted an O2 card but the screen on the phone read 'Insert correct sim'.
We were on the understanding that once his phone was unlocked from Virgin he could put any sim in.
Does anyone know what has happened here and how we can get the O2 card to work.
Today my son put a T Mobile sim card in his phone but he found that the signal was just as bad so he took it out and inserted an O2 card but the screen on the phone read 'Insert correct sim'.
We were on the understanding that once his phone was unlocked from Virgin he could put any sim in.
Does anyone know what has happened here and how we can get the O2 card to work.