Foldable Phones Still Overheat—and Why You Should Wait

Foldables’ heat problem is not solved

Foldable phone overheating refers to the tendency of folding smartphones to reach high temperatures under sustained load, triggering thermal throttling issues that cut performance and undermine long-term foldable phone reliability despite premium pricing and powerful processors.

The latest tests tell a blunt story: foldable phones still buckle when you push them. A recent Motorola Razr Ultra with a 5,000mAh silicon-carbon battery and a last‑generation processor overheated and force‑closed a standard suite of benchmark stress tests, despite costing USD 1,500 (approx. RM6,900). That is not a minor quirk; it is a red flag for any buyer who cares about sustained performance. Benchmark runs that did complete show Samsung foldables and last year’s Razr Ultra hovering around 40°C (104°F) before the end of the 3DMark Wild Life stress test, a point where aggressive throttling kicks in. In other words, the category’s headline chips and sleek bodies still can’t stay cool, and that undermines the premium story manufacturers want to tell.

Why high-end chips and thin folds overheat

Manufacturers keep insisting that each generation of foldables runs cooler and faster, but the physics of the form factor is still catching up with the marketing. Cramming elite processors into thin, split chassis leaves little space for serious heat dissipation, and the benchmarks bear that out. We have already seen Snapdragon 8 Elite Gen 5 chips touch up to 49.5°C in conventional flagships; when you cram that into a restrictive foldable shell, temperatures can spike even higher under sustained load.

To keep peak performance going for any length of time, you need both a sizeable battery and a capable cooling system—two things foldables struggle to fit. The Razr Fold, which uses the more modest Snapdragon 8 Gen 5, tops out at a cooler 35°C (95°F) and throttles more gradually than rivals, while still beating the Galaxy Z Fold 7 in sustained performance tests. That should be a wake-up call. The fastest chip is not the smartest choice in a foldable. The obsession with spec-sheet bragging rights is making foldable phone overheating worse, not better, and buyers are the ones paying for it.

Thermal throttling issues hit everyday users

In day-to-day use, many foldables feel fine—scrolling social feeds or shooting photos rarely triggers the worst behavior. The trouble starts when you ask for more: a gaming session, heavy camera use, or extended navigation. Under those conditions, current foldables climb fast toward 40°C and then slam on the brakes. Apps slow, frame rates tank, and in the Razr Ultra’s case, the device simply shuts down stress tests altogether. That is thermal throttling in action, and it means the power you paid for is not the power you can rely on.

There is another practical sting in the tail: battery life. Keeping up premium appearances matters to an extent, but customers would be equally happy if a more frugal chip meant their batteries lasted longer instead—especially when foldable phone batteries are often smaller to begin with. Instead, many current models run hot, throttle quickly, and burn through charge. For people who want their expensive foldable to double as a pocket console or work machine, these thermal throttling issues are not theoretical; they are daily compromises.

Why this is the wrong moment to buy a foldable

This would be worrying enough in a quiet year, but it is happening at the very moment the foldable market is about to reset. This year has already been called a critical year for foldables, the most important since the original Galaxy Fold launched, as more brands pile in and existing players prepare big redesigns. Yet the advice from reviewers is clear: you probably should buy a folding phone this year—just not right now.

The timing makes patience a feature, not a virtue. The Razr Fold is one of the best folding phones available, but its biggest improvements may come via price cuts; last year’s Razr Ultra dropped from USD 1,300 (approx. RM6,000) for 512GB and USD 1,500 (approx. RM6,900) for 1TB to just USD 800 (approx. RM3,700) for that 1TB model within months, a USD 700 (approx. RM3,200) collapse backed by extra trade‑in credit. With similar discounts likely and current models already straining under heat, locking in now looks unwise.

What happens next—and how to protect your wallet

If foldable phone reliability is your concern, the near-term roadmap should shape your buying decision. Big things are on the horizon for the foldable market, and they are not years away. Samsung has confirmed that its next Z Flip and Z Fold will be announced on July 22, with rumors of wider aspect ratios and new Ultra variants. At the same time, discounts on the Razr Fold are expected within a month or two, and a folding iPhone Ultra is widely tipped to arrive in September.

That timeline matters. At most, you have two months before the landscape looks completely different, both in terms of hardware and pricing. Meanwhile, upcoming Flip models are likely to pair thin designs with Elite‑tier chips, a combination that history suggests will throttle quickly and warm up fast under games or benchmarks. The sensible play is to wait: let the next generation arrive, see whether anyone has finally tamed foldable phone overheating, and exploit the inevitable discounts on older models. Until manufacturers prove they can keep these devices cool and consistent, foldable enthusiasts should treat this period as a testing ground, not a shopping spree.