Unlock Samsung S3 (i9300) in seconds
Trying to do some testing against a mobile network and wanted to use my UK T-Mobile S3; annoyingly as much as I could roam onto other networks, every time I tried to enter APN details (specifically non-matching MCC/MNC) they seemed to get automatically deleted when I saved them.
Rang up T-mobile and spoke to a lovely gentleman there, who told me I could get my phone unlocked for only £25 and with (upto) a months wait. As i didn’t relish waiting (and I’m sure the last time I spent 6 months not getting a code for my desire), I thought I’d find an easier option.
1 – Root Phone
2 -Install GalaxSim Unlock
3 -Pay GalaxSim £2.50 through the play store (T-mobile want £25)
4 -Be amazed and profit; all my APN settings are suddenly there again and it’s happy with all sorts of odd SIM cards.
5 -Be surprised it’s taken you this long to get round to it.
edit: So it turns out T-Mobile (UK) does something odd with their sim cards. Even in an unlocked phone (tested with a nexus 4), if you have a T-Mobile SIM installed then it won’t let you specify APN details that contain MNC/MCC that doesn’t match 234-30. Extremely annoying, especially as it took an hour on the phone to confirm this
Samsung Galaxy S3 (GT-i9300) on T-Mobile UK (234-30)
Android Version: 4.1.2