[Galaxy S 4 i9505 Original Android Development] josterm:
A few days on snapshot 3 w/ OpenGapps pico and so far so good. Donation sent.

Highlight: Everything I need works! Bluetooth is **BETTER** than the Lollipop TW ROMs!!!

Sprint SPH-L720 in the US, run a wide variety of ROMs previously. Generally modified TW ROMs to keep the profile/prl updates working. I had settled on a MF9 ROM that got into the repeated-Google Services-ROM-download loop so moved over to OptCM12 briefly. That one left me high and dry with bluetooth and GPS crashes while on a trip, so jumped over to WickedX 10.9. Wicked had lots of bluetooth streaming skips and pops but otherwise solid. Also previously ran LiquidSmooth, Negalite and BluKuban (my favorite).

Here's what I've noticed from the first few days of use.

Tested and working great:

All basic phone functions (you know, working like a phone)

Data rates are fantastic, LTE acquisition is same, possibly better, than TW ROMs

Performance is fantastic

GPS locks in <5 seconds (using my own homebrew gps.conf, I despise CM's choice of reference servers)

Bluetooth audio streaming is rock solid (three different devices, several hours of listening in different usage/configurations. Primarily with Rocket Player, but also some testing with the provided player)

Battery life is an unknown. Been using it too heavily, plus hit a few quirks. When it slept properly it was running similar to prior ROMs. My typical daily use is using Facebook like a bloated and intrusive RSS reader, two or three phone calls, some mapping, an hour or two of music, and some lightweight email/browsing.

Quirks:

1) Camera app stayed active (constant wakelock, trying to load camera app results in "camera not available") ONLY when launching camera from the lock screen. Launching the camera from the MMS app and from the launcher did NOT cause this. Just tried to recreate and guess what? It's not happening again.

2) Switching resolutions in the camera causes it to lock up, requiring a reboot. BUT it comes up with the selected resolution after the reboot.

3) APN selector doesn't come up under the settings panel. I can get there by searching for it or via Elixir, but it just says "APN settings are not available for this user". Since it's not broken I'm not willing to nuke the databases. I keep a TW ROM handy to maintain the modem anyway.

4) Tried loading SuperSu (2.66 and 2.73) to make TiBu happier (see next bullet). This was a bad idea. Didn't boot - just sat with a blank screen and the boot LED flash sequence. Let it churn for 30 minutes then gave up. A dirty flash on top of this state is a really really bad idea.

5) Other minor quirks that I think are just part of MM - I learned all my habits on ICS and just haven't paid that much attention since. MTP is a little delicate. TiBu can only access the external SD via the DocumentProvider which is terribly slow. Formatting the SD card didn't go well - the format stayed at 20%, eventually did a forced reboot. Looked like the handset had nuked the file system table, but the partition table was still intact. Formatted on a PC and went about my way.

6) Under Lock Screen settings, there are two entries for Lock Screen Wallpaper. The first one works. The second one causes settings to FC.

7) Daydream with a clock didn't work? Just didn't come on, screen stayed off. Didn't spend any time on it.

I'm looking forward to snapshot 4 (and stables!), but this is a daily driver.

Stuff I don't use so I can't comment:

VOIP calling / Skype / Whatsapp

Voice/video recording