The DigiCUBE android wallet works great apart from what was already said about the display on some phones and a couple of extra things that need tweaking on the GUI mentioned by the App Developer & saying he will update it very soon.
I also forgot to mention that when you try to sync and the backlight turns off or exit out of the CUBE app without minimize on then it will stop syncing, I had to turn my screen settings to turn backlight off never which sped things up and only had to restart it a couple of times but it got there eventually.
I have the above mentioned Display problem as well on my LG Optimus F5, not much is squished of the display but it is easily usable if you know what your doing, I've deposited some CUBE to it so lets just hope staking works.
The wallet uses anywhere from 60MB-110MB of RAM depending on what it is doing. I let Android manage RAM instead of forcing the wallet to stay open (better for the system) so unfortunately Android may chose when to keep the wallet open or hibernate/close it. The wallet should stay open in the background on phones with 2GB+ RAM. Your phone has 1GB so you will have to keep the app open and on-screen to let it run.
Fortunately, your coins gain staking weight even when your wallet is offline so you just need to open the wallet once a day to let it download the latest blocks and stake before closing it till the next day.
Well staking works
When I was syncing up the chain I got an orphan since the time it was created was earlier then when I synced up to the current block at the time.
Anyway my stake eventually came through, the orphan the wallet originally showed split and no mature stake was waiting to mint, I left it for a bit and it popped back up saying mature stake so there is a little bit of delay just like the PC wallets in the Minting Tab.
Great job DigiCUBE ! I'm ready to coin control send my coins to my Android wallet again