A new Reddit thread is getting T-Mobile customers talking after users claimed there may be a way for existing subscribers to score a 20% discount on qualifying plans. The catch, based on the discussion, is that this appears tied to retention and may only be available if you move to one of T-Mobile’s newer premium plans, such as Experience Beyond or Go5G Next.

According to a Reddit post (spotted by PhoneArena), customer service has had an “existing retention offer” since the start of the year that can effectively work like Insider, knocking 20% off eligible lines. The post says customers may need to tell support they’re thinking about switching carriers and ask about the 20% retention offer, and that some reps may not know about it right away. Several commenters said they were able to get the discount added after reaching out, including through T-Force on X.

That said, the same thread also includes plenty of warnings. Some users said moving off older plans could mean giving up benefits like tax-inclusive pricing, grandfathered rates, or price-lock protections. Others argued the math may not work out if you already have a strong legacy plan or multiple free lines.

So, this doesn’t look like a universal hack or an officially announced promo. But based on the Reddit thread, it may be a real retention option for some existing customers on newer plans. If you’re thinking about trying, it’s probably worth checking your current plan details first before making any changes.

Source: PhoneArena