On top of these emerging issues, the iOS 8.0.1 update also consumed up to 5.8 GB of storage space on their devices, restricting some iPhone users with small storage capacity left on their devices from installing the update.
In an attempt to fix these said bugs, Apple responded by pushing out the iOS 8.0.2 update. While the most recent update to iOS has resolved plenty of bugs, another issue has purportedly emerged on their iCloud Drive files that are getting deleted automatically. Some said in relevant forum posts that they've lost iWork documents that were stored in the iCloud Drive.
Upon learning on this issues, we'll attempt to offer you some workarounds that could help you deal with Bluetooth connectivity while waiting for a definite fix from Apple.
Troubleshooting Bluetooth connectivity issues after iOS 8 update
Note: Be sure to test your device after performing every step to see if the problem is fixed. Otherwise, continue to the next workaround.
1. Turn Airplane mode on and off. Switch it on for 30 seconds, then turn it off and try using Bluetooth again.
2. Restart your device. A simple restart can also help resolved temporary issues on the device. So if this is the first time you experience Bluetooth connectivity problem, try to hold down the Home button and the Sleep/Wake button until your device restarts.
3. Power cycle your wireless router. Turn the router off, unplug its power cord from the power source. Wait for 30 seconds. Plug it back in and turn it on.
4. Check Bluetooth settings with the following steps:
a. Tap on Settings.
b. Select General.
c. Tap on Reset.
d. Select Reset Network Settings.
e. Setup your Wi-Fi and Bluetooth again.
5. You may need to contact your router manufacturer for further assistance in checking the rest of the router settings. If you can, try chaining your router channel. Updating of the router firmware is also recommended.
6. If problem persists, then you may have to perform a factory reset on your iPhone (restore factory default settings). Don't forget to backup your device first to avoid loss of important data during or after the hard reset.
After you've backed up all your files, follow these steps to hard reset your device:
a. Go to Settings.
b. Tap on General.
c. Select Reset.
d. Select Reset All Settings.
If a hard reset failed to fix the issue, then visit a retail location for your carrier for further recommendations/assistance.