GAMAKOO G25 Ultra S Pen 5G Smartphone Dual Sim Black Review

The GAMAKOO G25 Ultra S Pen 5G is a $100 Android phone with a massive 7-inch screen, included S Pen, and a huge 6000mAh battery. Performance is very slow, but the battery life and 5G support are exceptional for the price. It's a niche pick for note-takers and media watchers on a tight budget.

If you're hunting for a massive phone with a stylus and insane battery life for around $100, the GAMAKOO G25 Ultra S Pen 5G is a weirdly specific unicorn. It's a 7-inch Android 15 phone that comes with an S Pen, has a 6000mAh battery, and supports 5G. That's a lot of headline features for a phone you can buy for the price of a nice dinner. The catch? It's from GAMAKOO, a brand you've probably never heard of, and our data shows it's built more for endurance than for speed.

Let's be clear: this is not a performance phone. Its processor lands in the 17th percentile in our database, which means it's going to feel slow compared to almost any mainstream device. Apps will open with a slight hesitation, and multitasking with its 3GB of RAM will be a challenge. The 32MP main camera is decent for the price bracket—scoring in the 76th percentile—so you can get usable shots in good light. But the real story is the battery and connectivity. That 6000mAh cell is in the 99th percentile, so you're looking at days of use, and the 5G support (90th percentile) is genuinely impressive for this cost.

At $100, the value proposition is bizarre but compelling. You are trading all performance and polish for a giant battery, a big screen with a pen, and 5G. There's literally nothing else at this price that offers that combo. The obvious trade-off is that you're getting a sluggish experience with minimal storage. If your top priorities are battery and screen size, and you can tolerate slow performance, it's a unique deal. If speed matters at all, you'll need to spend more.

Compared directly to other budget phones, the GAMAKOO G25 is in a strange category. The Motorola Moto G series around $150-$200 will feel much faster and have better software support, but they won't have a stylus or this large of a battery. The Samsung Galaxy S26 and Google Pixel 10 are in a completely different league (and price bracket) for performance and cameras. The OnePlus 15 will also outperform it dramatically. The GAMAKOO's real competition might be older used flagship phones or smaller tablets. It's less of a 'phone' and more of a 'cheap, connected note-taking and media device with incredible endurance.'

Skip this if you need a fast, responsive phone for daily tasks, social media, or multitasking. Gamers, power users, and anyone who gets frustrated by lag should look at the Motorola Moto G or used Pixel models instead. Also skip it if you need more than 32GB of storage for photos and apps, as there's likely no expansion option. It's not a rugged phone either, so it's a bad choice for tough environments.

Should you buy the GAMAKOO G25 Ultra S Pen? Only if you have a very specific, budget-conscious need. If you want a secondary device for note-taking, media consumption on a big screen, and you absolutely need it to last for days on a single charge without breaking the bank, this could work. For anyone using this as their primary, daily driver smartphone, we'd say skip it. The performance is just too big a sacrifice for most people. It's a niche tool, not a mainstream phone.