Unable to decrypt email
When sending or receiving email on a mobile device, the communication is usually done through encrypted channels for the highest level of security. If you’re having trouble decryption email, check the email configuration settings on your mobile device. For example, many businesses use Microsoft Outlook for their corporate email systems. With Outlook each user has a private key. You can’t decrypt an email without the key. Usually private keys are installed on the mobile device via an MDM (Mobile Device Manager).
Extremely short battery life
Bad reception can drain the battery since it’s always trying to search for a signal. If you’re in a bad reception spot, you can try to spare the battery life by putting your mobile device in Airplane mode.
Features such as 802.11 wireless, Bluetooth, and GPS can also be battery drainers. You may want to disable these features when not in use to preserve your battery life.
Manufacturers of mobile devices may also offer stats on the battery usage. On both an Android and Apple iOS device, you can go to Settings > Battery to view things like which application is consuming the most battery life.
Mobile device batteries can only handle a finite number of recharges, and eventually will need to be replaced.
Overheating
Excessive heat can cause devices to automatically shut down to prevent overheating damage. Charging or rapidly discharging the battery, high CPU usage, and using the display light are some items that can create heat on your mobile device.
Check your app usage to see if a particular app is using a lot of the CPU, which may be causing overheating.
As a general precaution, avoid putting your mobile device in direct sunlight which can quickly overheat your device.
Frozen system
A frozen system is where your mobile device suddenly stops working. The device becomes unresponsive to screen and button presses.
Perform a soft reset to see if this allows you to regain control of your mobile device. Hold down the power button and turn off and then restart the device.
If a soft reset doesn’t work then perform a hard reset. On Apple iOS devices a hard reset is performed by holding down the power and home or volume button (depending on the model) for 10 seconds. For Android devices, it depends on the model. There are various combinations of power, home, and volume button presses.
If the issue occurs even after perform a hard and soft reset, then you can try installing the latest operating system to see if that resolves the issue. If the issues still persist then you may need to do a factory reset which will clear out all the data and settings and go back to default settings.
No sound from speakers
If no sound is coming from the speakers, check the volume settings in both the app and phone settings. Bad software may be a possible cause you can try deleting the app and reloading.
To troubleshoot, you can try headphones and see if you can hear anything with the headphones.
If the sound starts but then stops, the issue may be that multiple apps are fighting for control of the sound. Try to keep one of the apps in the foreground to see if that stops the start and stopping of sounds.
If you’re getting no sound after trying a variety of things (alarm, music, video), try installing the latest software. If that doesn’t work, you may need to factory reset your device to default settings.
GPS not functioning
If the GPS is not functioning, check the settings that enable GPS. Make sure that GPS capability is turned on. In Apple iOS devices this is done by going to Settings > Privacy > Location Services. In Android devices go to Settings > Location.
Also check the configuration for location mode, which specifies how you’re using GPS and how it interoperates with other location services. In Apple iOS devices this is done by going to Settings > Privacy > Location Services. In Android devices go to Settings > Location > Location mode.
Make sure that you’re in an area with a good view of the sky, so that there are no obstacles restricting your GPS antenna from talking to the satellites in space.
Swollen battery
A swollen battery is an indicator of a failed battery. The battery swells due to a build up of gas. Be careful not to damage or puncture a swollen battery since it can lead to fire risks.
If you notice a swollen battery, stop using that battery immediately and dispose of it properly.
