- Samsung Galaxy users report slower charging after the One UI 9.0 update.
- Reports mention reduced charging speeds on Galaxy S25 and some older Galaxy models.
- Samsung has not confirmed whether One UI 9.0 caused the reported charging slowdown.
Samsung Galaxy slower charging is being reported by some users after installing the One UI 9.0 update. The complaints are being discussed online, with users saying their phones may no longer reach the same charging speeds as before.
The Samsung Galaxy slower charging reports mainly concern changes in charging speed and maximum charging power. However, Samsung has not confirmed that One UI 9.0 intentionally reduced charging performance.
Samsung Galaxy Slower Charging After One UI 9.0
Several Galaxy users say charging has become slower after moving to One UI 9.0. Some reports suggest that Super Fast Charging is no longer drawing the same amount of power as before the update.
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The complaints appear to involve the Galaxy S25 series and some older Galaxy phones. Users have reported changes in both maximum charging power and overall charging speed.
What Are Galaxy Users Reporting?
Online discussions about Samsung Galaxy slower charging include users who noticed slower charging after installing One UI 9.0. Reports mention the Galaxy S25 series as well as older models such as the Galaxy S24 Ultra.
These reports do not establish that every Galaxy phone running One UI 9.0 is affected. Charging performance can also vary depending on the charger, cable, battery temperature and device settings.
Has Samsung Reduced Charging Speed With One UI 9.0?
Samsung has not confirmed that One UI 9.0 deliberately reduces charging speeds. There is also no official explanation linking the reported charging behaviour to a specific software change.
Some users have speculated that charging behaviour may have been adjusted to control heat or protect battery health. This remains speculation and should not be treated as a confirmed explanation.
Other Reasons Samsung Charging Speed Can Change
A software update is not necessarily the only reason for slower charging. Charging speed can change because of several factors, including:
- Higher device temperature during charging.
- Changes in battery or charging protection settings.
- A different charger or USB-C cable.
- Battery condition and current charging level.
- Background activity or heavy phone usage while charging.
After a major software update, a phone can also perform background optimisation and app-related tasks. This can temporarily affect temperature and power consumption, so a short-term change does not by itself prove a permanent charging limitation.
One UI 9 Rollout Continues Across Galaxy Phones
Samsung is expanding One UI 9 across its Galaxy lineup in phases. The Galaxy S26 series received the stable update first, while additional Galaxy models are being added as the rollout continues. Availability can vary by device, market and carrier. Samsung Galaxy users can also check Samsung Support for official help.
You can read our coverage of the Samsung One UI 9 rollout for more details about the wider update.
What Should Galaxy Users Do?
If you notice Samsung Galaxy slower charging after the update, first check whether you are using the same charger and cable as before. Also check the charging settings and allow the phone to cool if it becomes warm.
Users should avoid concluding that One UI 9.0 has permanently caused Samsung Galaxy slower charging based on a single charging session. More testing across different Galaxy models and charging conditions is needed.
Conclusion
The Samsung Galaxy slower charging reports after One UI 9.0 include complaints involving the Galaxy S25 series and older models. Samsung has not confirmed that the update is responsible or that charging speeds were intentionally reduced.
For now, the reported slowdown should be treated as an issue under observation. Charger, cable, temperature, battery condition and device settings can also affect charging performance.
Frequently Asked Questions
Are Samsung Galaxy phones charging slower after One UI 9.0?
Some users have reported slower charging after installing One UI 9.0, but the issue does not appear to affect every Galaxy phone.
Which Samsung phones are reportedly affected?
Reports mention the Galaxy S25 series and some older Galaxy models, including the Galaxy S24 Ultra.
Has Samsung confirmed a One UI 9 charging issue?
No. Samsung has not confirmed that One UI 9.0 is responsible for the reported charging slowdown.
Can a charger or cable cause slower Samsung charging?
Yes. Charger compatibility, cable condition, device temperature and charging settings can all affect charging speed.
Should Galaxy users be concerned about slower charging?
Users should monitor the behaviour and check their charger, cable, temperature and settings before concluding that the software update caused a permanent change.
