Installation Issues: Some Nexus users have not been able to get any farther than the Android 6.0 Marshmallow installation because of frustrating freezes or crashes during the upgrade process. To fix this issue, wait until the phone is completely discharged (dead), before recharging it to 100% again. We also recommend erasing the cache partition before installation. Here's how:
- Press and hold Power and Volume Down buttons together until the device reboots.
- Following the Google screen, wait until you see a large arrow at the top of the screen.
- Now, tap Volume Down button repeatedly until the Recovery mode screen appears with the arrow symbol. At this moment, simply tap the Power button.
- When done right, you will see this image:
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- Access a list of items from a pop-up at the top of the screen by holding Power button, tapping Volume Up once, then releasing the Power button.
- Navigate the list with the Volume toggle and highlight the erase or wipe cache partition option. Tap Power button to initiate the process.
- A bunch of status messages should appear at the bottom of the screen. Wait for about 10 to 15 minutes for the process to complete before restarting.
Performance Issues: Obviously, we didn't update to Android Marshmallow just to suffer from lag and slow response to inputs. A slow device is often contributed to low memory and stress to the processor. Similar to the solution for installation issues, clearing cache partitions should help get rid of some clutter to allow the processor to run optimally.
Battery Issues: The new update apparently requires excessive processing power and Nexus users on Android 6.0 Marshmallow have often reported issues with abnormal battery drain. The common battery preservation solutions include shutting off any apps that are sapping the juice from your battery, disabling unnecessary services, and even restart your phone regularly. Avoid running GPS, Wi-Fi, Google Maps, and background apps that require data.
Abnormal battery usage is common following major Android updates. Expect further Android Marshmallow updates that could make the OS more efficient.
App Crashes and Spontaneous Reboots: Persistant crashing suggests that there's either a corrupt file or the latest Android Marshmallow is not compatible with your apps or the device. Update your apps and then clear up your App data and cache to see whether this fixes the problem. Unfortunately, you may have to execute a factory reset or downgrading back to a version of Android Lollipop.
Connectivity Problems: Um, there's nothing smart about a smartphone if it fails to connect. Broken LTE data connectivity may occur after major Android updates. Try to reset the issue by switching your phone to Airplane mode and then turning it off. Also, you can also remove your sim card from the phone and then inserting it back in before rebooting.
Wi-Fi Problems: For issues regarding Wi-Fi, the first plan of action would most likely be to reset your router or check to make sure the router's firmware is up-to-date.
If we've established the issue is with the phone and not the router, then it's time to reset the connection. Select the connection via the settings menu and select 'Forget' and reconnect. If that still doesn't work, go to Wi-Fi frequency band and test out whether different options deliver Wi-Fi.
Finally, if none of these options work, boot your phone under Safe Mode and try to identify whether any out-of-date apps are causing connectivity issues.
Bluetooth Problems: Similar to Wi-Fi issues, you can fix Bluetooth by "forgetting" the connections. Go to Bluetooh settings and tap on the device that is giving you issues. Select Forget and Reconnect to see if the device resyncs. If this method does not work, wiping cache partition or executing a factory reset can help solve the matter.