I did a full wipe and installed latest 3.4.5 version of MIUI. Everything was fine, I have problem with yahoo mail and gmail. I tried to set them up manually, configuring imap and smtp as shown in most website, and it can only be setup when cellular in on. Yahoo imap.mail.yahoo.com Port: 993 SSL accept all certificates. smtp.mail.yahoo.com 465 accept all cert (SSL) Gmail: imap.gmail.com 993 acept all cert SSL smtp.gmail.com 465 acept all cert SSL When I try to reconnect to wifi, and test whether I can access both gmail and yahoo, and the result is "could'nt open connection". I have 2 more account, one exchange, one hotmail, both working fine on wifi. Why is this so?