Let me start by saying, if you're looking for a no-frills, budget-friendly smartphone that gets the job done, the LatsYrs S21Ultra is worth considering. I've been using it as my secondary phone for a few weeks now, and here's my honest take.

The Good: First off, the 5.0-inch IPS display is surprisingly clear for its price range. It's not OLED-level crispness, but for browsing social media or watching YouTube videos, it's more than adequate. The dual SIM functionality is a lifesaver—I use one slot for work and another for personal calls without juggling two devices.

The battery life? Solid. With moderate use (texting, occasional calls, light browsing), it easily lasts a full day. The 3000mAh battery charges in about 3 hours, and the standby time is impressive—I once left it untouched for 3 days and still had juice left!

Performance-wise, don't expect flagship speed, but the quad-core processor handles basic apps like WhatsApp, Facebook Lite, and even TikTok smoothly. The 16GB storage (expandable via microSD) is decent for photos and a few apps—just manage your space wisely.

The Not-So-Good: The cameras are... okay. In good lighting, the 5MP rear and front cameras capture usable shots (think: Instagram stories or video calls). But in low light? Grainy and washed out. Also, the Android 9.0 OS isn't upgradable—a minor gripe since most essential apps still support it.

One quirk: The Face ID works fine but isn’t lightning-fast like premium phones. And yes, as noted in the description, avoid this if you're on CDMA networks. Stick to GSM carriers like T-Mobile or Mint Mobile.

Final Verdict: For under $100? A steal. It’s perfect as a backup phone, a kid’s first device (drop-friendly!), or for seniors who need simplicity. Just temper expectations—it won’t replace your iPhone or Galaxy S23 but shines where it counts: reliability and value.