Best answer by Juan
Hi @Jessica ! I'm sorry to hear your P8 Lite won't connect to Wi-Fi and Bluetooth. As you mentioned that both of them are greyed-out, this seems to be a problem with the antenna. If you already tried factory resetting your device and the issue persisted, this will require sending your device to our service center to have it inspected and repaired. As device is out of warranty (as you mentioned is 3 years old), I would suggest you contact our support time for further instructions. You can find our contact details in this site: https://consumer.huawei.com/uk/support/
For backing up your data, I recommend you have a look at the following post: https://uk.community.huawei.com/other-smartphones-8/how-to-make-a-back-up-180/index1.html
I hope this information helps you! We will be here if you need further assistance.
Have a great day!