Depending on the current software, choose from Install Now, Reboot and install or Install System Software. Choose Settings > About Phone/ About Device > Check > Update.To back it up, make sure the phone is plugged in, connected to Wi-Fi and backed up.Open Settings > About Phone/ About Device > Android Version to find out the version the handset is currently using.How to upgrade an Android phone’s software If a handset is up to date, it will display: ‘ Your software is up to date‘. Ensure your iPhone is connected to Wi-Fi and plug it in to charge, then open Settings > General > Software Update > Download, then Install.This will ensure if you’ll be able to retrieve your data if anything goes wrong. Open Settings > Apple ID > iCloud > iCloud Backup and select Back up Now. You should back your data up to iCloud, just in case.You can check how much space you have under Settings > General > Storage. To update a compatible iPhone, firstly just make sure you have enough space to house the new iOS – they could take up several GB of storage, so you may have to delete some apps or photos.This will display the software version that handset is currently running. Open Settings > General > About > Software Version.

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