From my point of view, the most convenient interface is in mobile casinos using "Microgaming" software - easy handling action buttons (which is particularly helpful playing video poker), there is no need to make extra touches to make a bet and start a new game, pleasant graphics. Speaking about honesty of the mobile casinos games, then the casinos I played in, and these were casinos of repute, in most cases with famous software, my results were good. In the majority of casinos I managed to win, that is the results were even better that they should have been in theory. On the whole, I would quite recommend playing in mobile casinos.
Concerning mobile poker rooms it is a little more problematic. Firstly, there may be problems with players themselves - connection problems. In many situations, especially if a phone is on the move or in some "dead spots" with no network coverage, there may be connection drops. Secondly, there appears a problem with the screen size. Actually, a small screen of a mobile phone cannot fit ten people with cards, therefore, as a rule, only half of the table is displayed, there is both manual and automatic scrolling. Even after this, card sizes and cards face appear to be very small, but in principle, everything is readable, it is possible to play.
At present there are not many mobile rooms. One of them was "Ultimate Bet" a mobile poker room within "Ongame" network. Though, in case of "Ultimate Bet" players of a mobile version can play only cash games and they are only low limit. There are three types of games offered: real money games, ultimate points and free games. The "mobile" tables are separate from the normal tables so you cannot play the same tables you can from a PC. Ongame soft networks are much better - you get an opportunity to play at the same tables that online poker players do. At present only Hold'Em, cash games limited and unlimited are offered. There are long, short and face to face tables (in this case everything is on the screen without scrolling) options. To select a table you have an opportunity to apply filters as regards each of the parameters, after that you receive the list of available tables. Having chosen the name of the table, below you will find standard information on the table: flop view, medium bank, the number of players etc. Unfortunately, in contrast to the online version it is impossible to enter the waiting list - a poker player can only join the table with a vacancy (though, may can watch any one). Finally sitting down at the poker table, you will discover that it is a reduced copy of the Ongame tables with the same avatars of players. There are no flags of prior action option, the decision is taken by pressing buttons 1-3, with the unlimited Hold'Em after a bet/raise there appears a window, where one can enter the amount of your bet.
On the whole, it is rather convenient to play, especially limited poker, though, you will not manage to play at several tables, therefore, I think that it is better to play face to face: a dynamic game and the image is big, no need to scroll. Also I would recommend to test your poker skills at Bwin mobile poker room, as well as at rather popular EuroPoker room. By the way, the traffic while playing is quite low - not higher than in a mobile casino. If you have any doubts about your competence in poker techniques try to play off-line for the practicing purposes.
If you often find yourself a passenger, have to wait in a queue or simply wish to entertain yourself while on Holidays, then mobile casino games is not a bad choice.