Soldato
A factory reset within android should clear all. But you need to delete pics and stuff manually.
Use the reset in settings and tick the box to wipe all data and it's all covered. The same as in recovery as it boots into it to do it.
How would I do that, I only have the two gmail accounts I use on the phone.
You would boot it back up after wipe and see if you can get to enter new details surely?
**EDIT**
Interesting
Reset your device in Recovery mode: If you reset your device using the recovery menu, you need to enter a Google username and password associated with the device during the setup process. You need to be connected to the Internet to completely set up and use the device after reset.
You could be snookered here. Is it someone local you sold it to?
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