CustomDroid
OnePlus

OnePlus 9

Qualcomm SM8350 Snapdragon 888released Mar 2021up to android 16latest android is 17
ro.product.devicelemonade
OnePlus 9
photo: LineageOS Wiki
Actively maintained

Released Mar 2021, newest ROM build 1 day ago (9 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.

Hardware

SoC
Qualcomm SM8350 Snapdragon 888
CPU
Kryo 680
GPU
Qualcomm Adreno 660
Architecture
arm64
RAM
8/12 GB LPDDR5
Storage
128/256 GB UFS3.1
Screen
6.55" · 1080x2400 · Fluid AMOLED
Battery
4500 mAh
Network
2G GSM · 3G UMTS · 3G CDMA2000 · 4G LTE · 5G NR
Released
Mar 2021

Sensors & features

  • A-GPS
  • Accelerometer
  • Compass
  • DP over USB-C
  • Dual SIM
  • Dual-frequency GNSS
  • Fingerprint reader
  • BeiDou
  • Galileo
  • GLONASS
  • GPS
  • SBAS
  • QZSS
  • Gyroscope
  • Hall effect sensor
  • Light sensor
  • NFC
  • Proximity sensor
  • Qi wireless charging
  • Qi reverse wireless charging
  • USB OTG

Specs from the LineageOS wiki (CC BY-SA 3.0).

ROMs · 11

The OnePlus 9 (codename lemonade) has 11 tracked custom ROMs on CustomDroid — including Project Elixir, crDroid, Evolution X and 8 more, running up to Android 16. Each listing links to the project's own download and install guide, and was last checked against the projects' catalogues on 21 Sept 2026.

Tick “compare” on two or three builds to see them side by side.

Show
Android

RSS feed — subscribe to get new OnePlus 9 builds in your reader · JSON

Before you flash

Flashing generally means unlocking the bootloader, booting a custom recovery, wiping, then installing the ROM. Exact steps differ per device and ROM, so follow the Install guide for the one you pick, and back up first. Check what can break (banking apps, DRM, carrier features) and how to get back to stock before you start. Why flash a custom ROM · All guides

This is a Qualcomm device, so on Windows you'll want the Google USB Driver (and QDLoader 9008 to unbrick) before your computer will see it in fastboot. Which USB drivers you need.

LineageOS publishes a step-by-step install guide for this device: wiki.lineageos.org/devices/lemonade

Timeline

  1. Jul 2026
    LineageOS, /e/OS, crDroid, Evolution X, Project Matrixx, Project Infinity X, Project Elixir first tracked
  2. Sept 2026
    iodéOS, LMODroid, LineageOS for microG, Kali NetHunter first tracked

Dates show when CustomDroid first indexed each ROM for this device, not when support originally launched.

ROM availability and links come from each project. CustomDroid indexes builds, it doesn't mirror them — always download from the official project, verify the file's hash/signature, confirm it matches your exact codename, and back up before flashing.