$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on One Unlimited for iPhone (all lines on account req'd on plan), 5G Do More, 5G Play More or 5G Get More plans req'd. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req's are no longer met. See vzw.com/bring-your-own-device for details.
I'd check my account settings, verify they are correct and test them with a small text only message. If you corrected any settings attempt another test attaching a photo this time. Also if you are using the stock mail app, make sure in the settings you've set the max mail size limit high enough.(I have mine drug to 1mb.