iMessage activation failure. Keep receiving REG-RESP sms
Hi. I'm using iPhone 4S running ios 9.3.5. I have an issue regarding imessage activation. When I turn on the imessage, the status remains 'waiting for activation' and later I got a message REG-RESP?v=3;r*********. From my research on the website, somebody told that message is for imessage activation purposed. It is weird as my imessage still in 'waiting for activation' status. I've keep being charged for each message received. I had already try reset network setting, reset all setting, airplane mode, even erase all data & content but none is working. Please help 😢
iPhone 4S, iOS 9.3.5