I had a slight struggle making Gmail work on my mobile phone, and thought I should tell the world about it.
In short, I’ve used the e-mail program on the W800i for a long time without problems, but when I added a Gmail account and tried to use that instead, I got a TLS/SSL certificate problem. Gmail requires that you use a SSL connection, but this means that the certificates stored on your phone must recognize Gmail as a trustworthy source. The certificates already on my phone didn’t, so I had to find a new certificate.
This thread about the K750i and Gmail on the Esato forums was really helpful – it’s got all the information you need. In brief though, you need to download this certificate, which is issued by Equifax, and transfer it to your phone. You’ll probably need to right-click on the link and save it on your drive somewhere.
Then, using the Sony Ericsson File Manager application that comes with the phone (and can be downloaded off the internet) you drag the .cer file onto the phone. I dragged it from the explorer window onto the W800i icon in the SE File Manager. Then, your phone will ask you if you want to install the certificate. Confirm, and you should be good to go. Naturally, you’ll need to connect the phone and the computer to do this :)
Of course, there are other things that could be wrong. Remember,
- The settings for data traffic on your phone must be correct (check with your service provider)
- The e-mail settings on your phone must be correct (Gmail settings here)
- POP must be enabled in your Gmail account (under Settings => POP/Forwarding)
E-mail everywhere – yeah!