Why BoxPhone Only Works on Samsung

What BoxPhone Needs From a Phone

Before we get to why Samsung fits, here's the checklist a phone has to pass to survive in a farm:

1. You can unlock the bootloader. Needed to flash custom recovery, patch the boot image for Magisk, and do root + root-hiding.
2. ADB stays authorized after reboot. Nobody should have to walk over to tap "Allow USB debugging" on each phone every time it restarts.
3. ADB over Wi-Fi stays up. The adbd daemon needs to keep listening over Wi-Fi so you don't have to leave 50 USB cables plugged in.
4. Apps auto-start on boot. When the phone reboots, your bot or launcher must come up on its own. No human touching the screen.
5. No overzealous battery saver that kills ADB or background processes.
6. Debug + charging work at the same time. While the phone charges, ADB has to still go through.
7. Plenty of used stock at a fair price. A farm runs 50-200 units at a time. The math only works if supply is healthy.

Why Samsung Fits Best

Samsung Galaxy S8 through S10 (and certain Note / Z Flip models) tick almost every box:

• Bootloader unlocks through Odin. The community has documented every firmware out there. You'll never be the first person to try something.
• ADB authorization can be made to stick with a small system patch (Sikrid built this in-house).
• The USB controller is stable. Runs across a hub with many units and doesn't drop.
• Batteries hold up. Can run 24/7 for years even sitting on a shelf.
• Lots of used stock in Thailand. Affordable, with enough horsepower (Snapdragon 845 / Exynos 9810 or newer).
• Kernel and drivers are documented. Community custom ROMs exist for every model.

Why Redmi / Xiaomi Don't Work

Redmi 12, 13C and most newer Xiaomi models are simply off the table for BoxPhone. Here's why:

1. Bootloader unlock is slow and risky

• You have to wait 168 hours (a full week) after binding a Mi account before you can unlock — totally impractical for a 100+ unit farm.
• Since 2024-2025 Xiaomi has been pulling unlock rights in many regions — EU/Global units are getting harder to unlock by the month.
• Unlocking flags the Mi account — that account is then stuck to that phone, and you only get 3 devices per account per month.

2. MIUI / HyperOS kills background processes

• MIUI auto-kills adbd and background apps after 5-10 minutes idle — even with autostart turned on.
• System-level battery savers can't be turned off deep enough — you need root and pm commands to fully disable them.
• Start-on-boot on some models requires opening Settings on each phone to flip a toggle — no way to automate it.

3. ADB persistence is fragile

• USB debugging on MIUI lives behind a hidden setting called "USB debugging (Security settings)" — and some versions don't expose it at all.
• After reboot, ADB authorization vanishes on some models — back to tapping the screen.
• ADB over Wi-Fi turns itself off when the screen goes black. Fixing it needs root and scripts Xiaomi doesn't support.

4. Redmi/Xiaomi simply isn't built for phone farms

This is the heart of it. Redmi and Xiaomi are consumer phones built for one person to carry around, not for running automation 24 hours a day.

When you see vendors selling "Redmi BoxPhones", that's someone trying to move inventory. Run 50+ units in production for a month and you'll hit:

• Phones drop ADB every few hours — somebody has to reset them by hand
• After a power blip and auto-boot, the bot doesn't come back — you tap each one
• Batteries swell quickly because heat management wasn't designed for 24/7
• MIUI OTA updates can wipe root every month

Oppo / Vivo / Realme — Same Problems, Worse

• Oppo / Realme (ColorOS) — bootloader unlock has been completely switched off since 2022 on Global units. The only way in is engineering firmware you can't actually get.
• Vivo / iQOO (Funtouch / OriginOS) — bootloader is a pain to unlock, and ADB persistence is the worst on the market.
• Huawei / Honor — no Google services, and Huawei revoked bootloader unlock entirely back in 2018.
• Tecno / Infinix / itel — drivers and kernel just aren't stable enough for 24/7 work.

Summary — Why Samsung Only

Bottom Line

Sikrid BoxPhone uses Samsung Galaxy S8 / S9 / S10 / Note / Z Flip because they're the ones that pass every check a real phone farm needs.

Redmi, Xiaomi, Oppo, and Vivo aren't a matter of choice — they're not workable from an engineering angle. If somebody tells you otherwise, they haven't actually run a fleet.

Next time someone tries to sell you a Redmi BoxPhone, ask one question: "Run 100 units for 30 days straight — how many drop ADB?" The answer will tell you everything.

FAQ

Further Reading

• What Is BoxPhone
• Hide Root on BoxPhone 2026
• BoxPhone vs Device Farm
• Setting Up a 50-100 Device BoxPhone Farm