Flag this to a Moderator April 17 I'm having the same issue today! Go to this website – Online PDU Encoder and Decoder Scroll down to the bottom of the page, where it has a field for SMSC to be converted SMSC to PDU conversion Erase whatever text is in the fields for "Receiver" and the message box above the "Convert" button Enter your SMSC number in the SMSC field and click convert So, to fix the issue that "text message failed to send on Android phone", you can try the tips listed below in the article Tip 1 Soft Reset Your Phone Tip 2 Clear Cache on Your Phone Tip 3 Clear System Junk on Your Phone Tip 4 Force Stop the Message App
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