sim card rejected how to activate the sim mobile no:7639083856 vodafone sim
Yes, you can as long as the O2 phone is unlocked, then you can use a Vodafone SIM on it, or a SIM card from a different carrier.
how do you open the back of a vodafone 340
It's not possible. You can only block your own sim card by contacting Vodafone and reporting it lost or stolen.
no
Only if your phone is sim free.
One can find valuable information about Vodafone SIM only phone on a number of websites. Vodafone official website and Argos are examples of websites where one can find information about Vodafone
try doing a factory re set on your phone or take the sim card out for a few minutes then put it back in if that does not work then you may to take it a vodafone dealer and get them to have a look at it as you may need a new sim card
If the phone is unlocked you should be able to put any type of sim card in there as long as it is a GSM phone with a sim card slot.
Optus
The kind of SIM cards that Vodafone uses requires a V2 type SIM card. These vary in types from those that hold 150 phone numbers to 200 phone numbers.
why yes it possibly could