I got my UK Mobile "UNLOCKED" when I went to Phil' the first time, and have used it ever since, buying a new SMART PAYG SIM each time I arrive, and sticking my UK SIM back in when I get home.

BUT ... more and more we are having SERIOUS PROBLEMS with SMART.
My Fiancee lives in Dipolog, and SMART are the main Telecomms provider there, (Mobiles, Landlines and Internet).

It is now not usual for me to Voice Call Stacy, (from the UK), when she has failed to come On-Line at a pre-arranged time, only for SMART to tell me that her CP is "Unattended, or Out of Network Coverage Area" ....... when she is actually sat by her CP, hoping I'd call her, coz she has No Load and the Internet Cafe she is in CAN'T GET AN INTERNET CONNECTION !

Sometimes we'll have a conversation and she'll ask "Why didn't I phone her yesterday ?" ...... when I had actually tried maybe as many as 30 times, and every time SMART would tell me her CP was OFF ......... when it wasn't.

The latest problem is SMART telling me SMS TXT Messages have been Delivered ..... when the haven't !

I could never understand HOW it was possible for TXT Messages to Get Through, when ALL DAY, SMART had been giving me WHITE NOISE, The NU Tone, or "Unattended Messages", whenever I tried to Voice Call the same number.

My UK Mobile Provider won't refund the (Very Considerable) charges, because as far as they are concerned all my Voice Calls and TXT Messages were transmitted from their Network to SMART, OK.

SMART keep "Looking Into Them Problem", but NEVER come up with a solution.

We have now CANCELLED her SMART Bro Home Broadband Contract as the connection was NEVER RELIABLE, often losing connection during Instant Messaging Conversations, and during October last year, she only managed to get an Internet Connection THREE TIMES !!!

Maybe SMART's problem is a Regional one, and Communications are much better in other parts of the Country ?

But before you go blaming your CP for any problems you are having ..... check out the Mobile Operator, and maybe try a different Provider's SIM.