Rick Hurst Web Developer in Bristol, UK


gmail mobile app certificate error

I decided to try the new java gmail app on my sony k750i. It installed OK, but when I tried to connect it was telling me I did not have the “appropriate certificate”. After abit of googling I found advice on this forum thread to navigate to the following URL on my phone browser:-


I did this (even though I am reluctant to take the seven hours it takes to type in a URL that long on my phone) and it gave me a certificate to accept. The app now works a treat 🙂

archived comments

Hi, I tried this on a k700i – and got an “invalid certificate” error. I think certificates have different formats… there’s this x.509 format, etc. This certificate’s format might not be appropriate/valid for some phones. It would be great if google’s email app could just download the appropriate certificate in the appropriate format, if the phone didn’t have it…

Qasim 2006-12-08 05:21:22

Nice! it works, thanks!

dereck 2006-11-23 20:53:28

If that URL is too long for people, use this TinyURL instead:


Emyr Thomas 2006-11-24 09:37:11

hai there, i’ve tried this link and other at ocasta.co.uk , but my phone respond is unsupported content type – my phone is Nokia 6275i CDMA – how to install this certificate if the content tytpe is unsupported ? please help

ngux 2006-11-25 17:45:19

Hi. I came to this page looking for help about the GMail app security certificate in SE K700i and thanks to you, I found the solution. The long URL is really a pain in the ass but after the application started working, it felt totally worth the effort. Thanks a lot!

Raunak Mehta 2006-12-18 22:13:40

I have the same problem with my Nokia 6275i, but I can’t access the mentioned urls (both long and short one). Anybody can help me. Thanks a lot!

ykristiawan 2006-12-27 10:58:59

Thanks for the resolution. it worked very well indeed.

Skyin 2007-01-07 15:42:29

Is there any new issue, loading this page with my K700i it tells me illigal certificate.

Andreas 2007-02-19 17:58:01

Yeah – thanks, works great 🙂

Tim 2007-02-28 09:00:29

Anyone figure out how to get a Samsung SGH-a707 to accept the certificate and work with the gmail mobile app?

UghSamsung 2007-03-24 17:19:59

I have a samsung sgh as well, when I try to download the certificate it says unsupported file type. Also, you don’t have to ttype in the whole URL, you can send a text message online then goto

kristen 2007-03-25 21:08:36

I have a SGH Z720. Whenever logging and signing in to Gmail, after a short moment, certificate error message – Sorry, Gmail will not work on your phone. Your phone doesn’t have the appropriate certificate to communicate with the server. Try accessing Gmail on your mobile browser at http://mail.google.com. Well, accessed, downloaded re-installed, still the same. So puzzled. Seek help, anyone, please.

Philip 2007-04-08 06:37:57

Thanks! This helped me with my Nokia 6131! 🙂

Annie 2007-04-28 07:37:07

Thanks to this article it was working on my k750i in a jiffy.
Many thanks for the tiny url Emyr !

Neil 2007-05-23 14:01:26

Thanks a million! This trick worked perfectly with my Nokia 6131

Jarn 2007-05-28 13:41:55

Thanks a lot. Works fine (after an unsuccessfull first time) on my Nokia 6233.

Wim Tas 2007-06-03 11:38:16

On my k700i it perfectly works.
I’ve downloaded it on my PC and sent it to the phone with a bluetooth connection

Thanks a lot

Diego 2007-06-05 06:16:21

Many thanks for this. I had my Nokia 6131 reflashed and the GMial app wouldn’t work afterwards until I found this.

halifax555 2007-07-03 21:26:37

Well .. I can see lot of ppl found the solution for the cert … but never the less it does’t work for all …

Like many I too own Nokia 6275.
The browser does not support to download cert as it is.
Also when I checked the browser’s cert info I could see 2 from Versign and others.

This could be a basic problem with Series 40 Nokia phones.

MObiles CDMA 2007-07-30 10:06:14

I read from another site that just setting the POP (incoming) server to pop.googlemail.com and leaving the SMTP and all other settings the same will cure the problem. Worked great!

I tried it on my Nokia 6233 and it worked, after I also logged into Gmail and enabled POP access from the “settings…” menu.

Good luck

nokia6233 2007-08-27 12:11:42

This is excellent information, thank you indeed!

Jacob Wieland 2007-09-30 14:26:22

Google’s pages have wrong MIME type for this cert, which causes that Nokia Series S40 phones won’t recognize it. I left solution to google’s support-team and propably they will fix it some day.

I made little webpage to my own server, where you can download certificate to your Series 40 phone (may work with other phones too).
URL: http://tilu.homelinux.net

Mikko 2007-10-06 07:21:41

I tried this for my K800i but it didn’t work. Any suggestions?

aidanxc 2007-12-21 14:07:01

Worked like a charm, good info dude. My phone is a modified Nokia 6133, debranded and flashed with the latest software.

Frank 2007-12-26 06:20:13

Obviously many Nok’s have had their day in the sun. I’m still here melting my Sam keys trying to find some URL that will override Samsung’s incompetent engineering. Without reading volumes of threads does anyone have anything on loading up Gmail onto the SamSync (707)? Hey…ANYTHING would be greatly appreciated. You can even bill me…maybe. Merci Dear Friends and Foe alike.


Westown 2007-12-27 15:16:53

I had Gmail for mobile working just fine on my IC902 and then one day I get this error message “Certificate Error” Gmail for mobile will not work with your phone.. blah blah blah. I just sent the url above to my phone via sms using googles text to phone extension. It said it was going to overwrite the certificate with the new one but they had the same valid date. It still doesn’t work on my IC902.

I called Sprint and they referred me to Google and wouldn’t even let me talk to a technician about it since it was a third party.

Elijah 2008-04-21 19:07:38

I’ve just run into this problem, but I only get a “Downloading failed” error when trying to download the root cert 🙁

This is with a Nokia 6230i.

Maybe it’s time for a new phone.

Michael 2009-12-14 22:23:03