RMX3990 · 2 variants · 85 samples
Android
16 Unknown
Battery
5200 mAh
Technology
21
Chipset
parrot
Memory
8GB · 128GB
Display
1080x2412 (120Hz)
Model
RMX3990
Android
16 Unknown
Battery
5200 mAh
Technology
21
Chipset
parrot
Memory
8GB · 256GB
Display
1080x2412 (120Hz)
Model
RMX3990
Estimated charging time
2h 0min
to charge 0 → 100%
Max charging temperature
39.8°C
average peak while charging
Screen-on time
6h 30min
estimated on a full charge
Estimated battery life
8h 30min
estimated on a full charge
See your own charging speed, screen-on time and battery health in real time with Battery Guru.
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The Realme RMX3990 packs a 5200 mAh 21 battery and lasts about 8h 30min on a full charge with around 6h 30min of screen-on time. It charges from 0 to 100% in roughly 2h 0min, peaking near 39.8°C while charging. Every figure is aggregated anonymously from real RMX3990 owners using Battery Guru (31 samples), so it reflects everyday usage rather than lab claims.
Based on 31 anonymized samples from Battery Guru.
Aggregated Battery Guru data shows the Realme RMX3990 lasts about 8h 30min on a full charge, with roughly 6h 30min of screen-on time.
The RMX3990 charges from 0 to 100% in approximately 2h 0min, with charging temperatures peaking around 39.8°C.
The RMX3990 has a 5200 mAh 21 battery.
It is aggregated anonymously from real RMX3990 owners using the Battery Guru app (31 samples), reflecting real-world usage rather than manufacturer specifications.