Joe Maring / Android Authority

Not long after being crowned the best overall carrier in a recent report we covered, T-Mobile is back in the spotlight with a promotion that could put up to $1,000 in rebates into some customers’ hands.

A new offer called “Magenta Nights” appears to reward customers for switching their phone lines to T-Mobile, offering rebates of up to $500 for one line and up to $1,000 for two or more lines. The promotion was first spotted by The Mobile Report in T-Mobile’s T-Life app and, depending on the account, could be worth anywhere from $100 to $1,000 in rebate gift cards.

A Reddit user later shared the report, and a look through the comments reveals that the promotion can vary significantly from one account to another. Some customers say they’re being offered as much as $1,000, while others are only seeing offers worth around $100. It’s not entirely clear how T-Mobile is deciding who gets what, but the largest rebates so far seem to be reserved for customers switching from another carrier.

That’s what makes this promotion particularly interesting. Most carrier deals are broadly advertised and come with clear terms, but Magenta Nights appears to be more personalized. Factors such as your account status, wireless plan, location, or the number of lines on your account may affect which offer appears in the app.

The timing is unusual as well. Instead of running continuously like a traditional promotion, Magenta Nights seems to be limited to a short overnight window. The first promo went live at 6:00 PM PT (9:00 PM ET) on 14th June and ended at 6:00 AM PT (9:00 AM ET) the following morning, giving eligible customers just 12 hours to take advantage of the offer.

Fortunately, T-Mobile isn’t done with Magenta Nights just yet. According to updated information from The Mobile Report, backed by Reddit user comments, T-Mobile is expected to bring the promotion back over the next three Sundays. Additional Magenta Nights events will return on the weekends of June 21-22, June 28-29, and July 5-6 during the same overnight timeframe.

There are a few catches, however. The rebate is issued as a virtual prepaid Mastercard rather than cash, and it can take up to eight weeks to arrive. Once received, the card expires after six months, although it can be used anywhere Mastercard is accepted.

For anyone already considering a move from Verizon, AT&T, or another carrier, checking the T-Life app during one of the upcoming promotional windows could be worthwhile. Just don’t assume everyone gets the same deal.