help please

[Scottishamber]

I got my z2 almost a month ago and everything was going okay, but the last few days have been **bleep**. I am having a lot of trouble with my emails. They work fine at home as I have WiFi, but if I am outside, I keep getting this message "Could not open connection to server" I took my phone to the Vodafone store and the Girl there just switched it off and on again, then proceeded to embarrass me by loudly "explaining" how to reset my phone. I have since tried every method I have found on this site, but nothing is working and I am unable to get emails outdoors. Getting to the point of dumping my phone in a Charity Shop as I need access to email constantly because of my job. Hope someone can help.
Thanks

[Uliwooly]

Outdoors meaning on your data not wifi, correct?

[DickBarton]

Could be you don't have the correct Data settings (can't recall the actual term) - but if you phone Vodafone and ask them to resend their MMS and Data settings to your phone, that could fix them. Sound slike the phone doesn't have ther ight set up - works fine on wifi as it isn't using your carrier's data connection.

[Uliwooly]

Settings > more > internet settings > accept 

also disable your antivirus or taskiller, if any

Do you have stamina mode on?

[Scottishamber]

Sorry yes I mean data, Vodafone have sent me messages twice with settings for internet and mms, but it still doesn't help, they said the problem lies with the phone.

[Uliwooly]

Follow my above suggestions, re-download the apn settings, uninstall any antivirus and/or taskiller

[Scottishamber]

Sorry I know this sounds thick, but how do I find the antivirus or task killer?

[Uliwooly]

Do you have any antivirus app such as AVG, or norton or anything like that ? 

[Scottishamber]

I had AVG but got rid of it as someone said it could be causing problems.

[Uliwooly]

How old is your SIM card? is it a micro SIM card or did you trimmed a regular SIM card?