Receive up to $504 promo credit ($180 w/Welcome Unlimited, $360 w/ 5G Start, or $504 w/5G Do More, 5G Play More, 5G Get More or One Unlimited for iPhone plan (Welcome Unlimited and One Unlimited for iPhone plans can't be mixed w/other Unlimited plans; all lines on the account req'd on respective plans)) when you add a new smartphone line with your own 4G/5G smartphone on an eligible postpaid plan between 2/10/23 and 4/5/23. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
$699.99 (128 GB only) device payment purchase or full retail purchase w/ new smartphone line on One Unlimited for iPhone (all lines on account req'd on plan), 5G Start, 5G Do More, 5G Play More or 5G Get More plan req'd. Less $699.99 promo credit applied over 36 mos.; promo credit ends if eligibility req’s are no longer met; 0% APR.
I know how frustrating it can be when a system does now work as advertised. As someone who has been in the computer field for over 33 years, I know how the sales dept can make promises that the tech dept can't deliver on.
Anyway, here are a few things you may want to try before throwing in the towel. I'm going to assume that the mobile device is an iPhone but if not, the same basic steps should apply.
Hopefully, you won't have to go to such extremes again. But all advance systems will start getting a little screwy if they run long enough and it helps to reboot every now and then.
Good luck and please let us all know if this works for you.