You can fix this problem with iPhone by clearing the cache to make up enough space for AOL mail to function properly. To fix AOL mail not working on iPhone, remove all temporary files to free up some space in your device. You can clear the cache by opening the settings on your device and going to Apps options. In the apps option, locate and open the AOL email segment, and tap on clear cache. Once it’s done, open the AOL mail to check whether it’s working fine now.
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