Orange M2000 setting Preferred Networks

[Guest Shaunfarris]

Under Phone > Options > Network on the M2000 there is an option to set the preferred Networks and also Network Selection of Automatic or Manual.

Is it possible to add Vodafone, O2 or T Mobile (as they are in the list of Networks when you search) to enable effectivly roaming in the UK, as this would overcome my useless signal when indoors on Orange.