While iOS 7 is admittedly a beta-grade piece of software, one nasty glitch prevents access to the Home screen if the battery is at 20% charge level or below.Discovered (or at least showcased) by user Sergey Romanov, the bug is deemed critical and has been captured on film.
The steps to reproduce the flaw are: 1. discharge the battery of iPhone to less than 20%; 2. power off the iPhone; 3. switch on the iPhone and wait for the weak-battery notification; 4. try to unlock the screen.
Sergey mentions in the description of his video that he used a 16GB iPhone 4 to demonstrate the bug.
Not to offend anyone who still uses an iPhone 4, but Sergey’s footage adds more confirmation that Apple’s 2010 smartphone is having a really hard time coping with the processor / RAM demands of iOS 7.
The Cupertino giant will undoubtedly address this flaw in a future beta release of iOS 7.