I've just got a Nexus from my father.
Unlock and rooting are OK.
I've made a backup of my stock rom
Then I've installed a cynogenmod 4.4 and see that my 3G download speed is very slow (arround 5Ko/s)
Then I've returned back to my stock rom -> same issue.
I'm in France using Free Mobile (which is using roaming)
Please help me!
I've tryed a new SIM Card and the speed is OK.
Next I used my old sim card, the speed is OK too.