Re: Google Play Store shows firefox not compatible with this device even when firefox says tested for that device.
Samsung Galaxy Ace GT-S5830/GT-S5358 is what is shown on the article. You are saying yours is "S5830i". There is an "i" at the end of the model which may be the restriction. I will contact one of our mobile associates to look into this if the answer provided does not meet your needs. Thank you.