my phone keeps saying not registered on network, i cant make or recieve calls or messages also no connection to the interenet.
how do i fix this?
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It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
The Galaxy S2 has a bug where it disconnects with "Baseband Unknown" and will never connect again without physically disconnecting the battery.