I installed IOS 13.3 on my Iphone 7 yesterday. Now my Wi-Fi on my cell phone is unbearably slow. On laptops and all other devices, the Wi-Fi is just as strong as before. Have already started Wi-Fi / hand again… Does anyone have a plan how to fix this?
My first recommendation would be to reset the network settings of the iPhone. To do this, open the settings, tap on "General", on "Reset" and then on "Network Settings". In this way, all used WLAN networks and their passwords, cell phone settings and VPN / APN settings are reset.
Apple has created a help page for problems with the Wi-Fi network on iOS devices: https://support.apple.com/....com/de-de" class="text-primary">https://support.apple.com/....com/de-de" class="text-primary">https://support.apple.com/....com/de-de" class="text-primary">https://support.apple.com/....com/de-de / HT204051
At the seventh point listed on the website linked above, the reset is again explained with an image.
The update to iOS 13.3 may have encountered an error while downloading or installing. If necessary, reset the iPhone or install a previous backup of iOS. Be sure to back up your data before taking this step.
Apple has also created a very meticulous manual that explains the exact steps for resetting and the previous data backup: https://support.apple.com/de-de / HT201252
Resetting the router can also be helpful. Test the internet speed of the iPhone if necessary within other WLAN networks or compare it with the internet speed within the mobile network. This can provide more information about the more specific background of the problem.
If all of the above solutions do not produce the desired solution, it is advisable to consult Apple Support. For help, go to the official Apple Support website: https://support.apple.com/de-de
Here is more helpful information on the subject:
https://iphone-tricks.de/anleitung/35902-iphone-langsam-10-tipps
https://support.apple.com/de-de / HT201435
https://www.mactechnews.de/forum/discussion/WLAN-quaelend-langsam-nach-Update-auf-iOS-13-2-iPhone-7-339210.html
