Tech
iOS 4.0.1 for iPhone out now
Apple has released iOS 4.0.1 for iPhone users.
![adrian-kingsley-hughes](https://www.zdnet.com/a/img/resize/6f9ac99abaa541291e393a8b765bdffb2fa11559/2022/08/05/11c625de-cb18-4e3f-8614-5010553831f2/adrian-kingsley-hughes.jpg?auto=webp&fit=crop&frame=1&height=192&width=192)
Apple has released iOS 4.0.1 for iPhone users.
![15-07-2010-19-27-58.png](https://www.zdnet.com/a/img/2014/10/04/9cab57cb-4b6f-11e4-b6a0-d4ae52e95e57/15-07-2010-19-27-58.png)
What does it do? Not much really:
- Improves the formula to determine how many bars of signal strength to display
I think I'll pass ...
This update is compatible with iPhone 3G, 3GS and 4.