Just to list a few:
– No easy option to send voice message (only option is to record voice and then share, but no option to send one in first place or reply to someone with a voice message)
– No zoom functionality in email to see the text larger, even you make 'large' fonts in the phone settings, it'll only enlarge the raw text, but if there is some formatted text in an email, then forget about it, no way to read it
– No way to select part of an email, like select and copy some text, etc.
– No support for some basic file formats, especially important PDF, etc.
– In T9 Word, no way to just click right and proceed, you must click first left and then right
– While on a call, no easy way to return to the text message screen
– When sending a new text message, no way to choose from a list of those recently sent to
– Sending a message to a group of contacts, or select from a group, simply doesn't work. It brings up the list of contacts in that group, but no way to select any or all contacts in the group
– When I dial a number and call it, after the call ends, it'll go back to a blank screen as if it's waiting for me to enter some numbers. I gotta press 'End' again to clear and return to the home screen
– Last but definitely not least, sometimes it takes a second to respond to a specific button-click, especially when going into text messages, it may take a second to load the messages, etc.