Credit: Edgar Cervantes / Android AuthorityTL;DRT-Mobile customers on the Go5G Plus plan reported missing part of their promotional credits during iPhone 17 pre-orders.Apple has informed affected customers that they will receive the remaining balance via billing once their device trade-in is complete.T-Mobile offers up to $1,100 off when trading in devices for the new iPhone 17 series.Apple launched the iPhone 17 series last week, and it’s got a few Android users tempted to make the switch. For those looking to trade-in their Android phone for the iPhone 17, doing it through a carrier like T-Mobile makes sense as you can score a sweet deal, with up to $1,100 off on some plans. Many users have jumped at the opportunity, but something was amiss, and they did not get full promo credit from T-Mobile on their iPhone 17 pre-order. Thankfully, it seems T-Mobile and Apple are already rectifying the situation, assuring users that they will soon receive their balance credit.Reddit user NoT-RexFatalities and several others received an email from Apple informing them that their recent iPhone 17 pre-order through T-Mobile qualifies for $800 in total credits. The user had only received instant credit of $200 for their trade-in device, but Apple has assured them that they will receive the remainder $600 over three billing cycles automatically with T-Mobile, once their device trade-in is complete. For reference, the user was on the Go5G Plus plan, and it seems most of the affected users were on this plan too.