How to continue messaging from iPhone4 to Android phone?

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My iPhone4 screen broke where 80% of the screen is opaque--rendering it unusable as I pretty much have no screen. Rather than fixing it, I am now using an Android phone. As a result I am not receiving messages to my Android phone. Instead they continue to be going to my iPhone which I cannot access or read because I have no screen. Any suggestions on what to do? Apple says I need to go onto my broken iPhone to resolve the problem but I can't do that because, again, I have no screen. Please, any help is appreciated. Thanks.