[Sony Xperia M] Dr Goodvibes:
[MENTION=5493341]Antrikos48[/MENTION] is correct.

The Sony white paper states there is only support for up to 32GB cards.

The 32GB cards are normally formatted as FAT32 by default and fall into the usable range with the default cluster size.

64GB cards are formatted as exFAT and could NOT be used in an XPERIA M without being reformatted.

However, if you format a 64GB microSD card to FAT32 with a cluster size of 64KB I have shown that it does work (in my case) on a XPERIA M.

The caveat is that if it doesn't work in your phone, you only have yourself to blame as it is NOT supported as designed my Sony.

My XPERIA M has root access with a LOCKED bootloader.

• Viewing angle is fine for 99% of the time.

• Haven't tested battery life with XPERIA M root access and SetCPU screen-off profiles, but wouldn't expect anything less than two to three days under light use.

[see battery test]

REMOVABLE/replaceable battery, battery life shouldn't be a problem.

• My first reaction is that the camera is a disappointment, but haven't really used it extensively to get an informed option.

• External MicroUSB USB flash and SD card readers are supported directly attached to phone.

• Adreno 305 is a VERY good GPU for an entry level phone and will be interesting when/if it gets Android v4.3 to see what OpenGL ES 3.0 support provides.

• Dual core S4 chipset CPU is good and only slightly slower than my over-clocked dual-core S3 chipset XPERIA S 1.7GHz

• The bottom of the screen is taken up with the 'soft' navigation buttons, instead of being outside the screen. (personal preference)

• Phone is very light and a pleasure to handle.

• Assume MHL external connection is a no go until shown otherwise. MicroUSB port can't do power and data at the same time, which is a bad indicator.

• Sony DK10 Media Dock ONLY provides power. It can not provide USB data and power at the same time. Really means it doesn't work. :(

• Aten 4 port USB switch is supported †

• Targus 7 port USB powered hub is supported

• WD 320GB HDD is supported via a power USB hub

• Logitech USB Unifying mouse supported (sans back key and context menu on mouse) M950,M325 and M905 tested

• Logitech USB Unifying keyboard supported (Esc - Back and Alt-Menu - context menu) K800 and K400 keyboards tested

• The supplied microUSB power is greater than an XPERIA S as I can mounted USB flashdrives on the XPERIA M which give a power consumption error on the XPERIA S. Still can't mount a USB powered WD USB HDD directly to the phone. You need a powered hub for that.

† - With the XPERIA M connected to an Aten 4 port USB switch it becomes one of four devices that can selectively use all supported USB devices connected in a desktop environment. For me this feeds a Targus 7 port powered USB hub and a U2410 24" monitor with additional USB ports AND the SD/MMC card reader in the U2410 monitor is available too.

WiFi 2.4GHz and 5GHz are both supported.

iPerf test follows

------------------------------------------------------------

Server listening on TCP port 5001

TCP window size: 85.3 KByte (default)

------------------------------------------------------------

[ 4] local 172.16.nnn.nnn port 5001 connected with 172.16.nnn.nnn port 43645

[ ID] Interval Transfer Bandwidth

[ 4] 0.0-10.0 sec 131 MBytes 109 Mbits/sec

[ 5] local 172.16.nnn.nnn port 5001 connected with 172.16.nnn.nnn port 43646

[ ID] Interval Transfer Bandwidth

[ 5] 0.0-10.0 sec 130 MBytes 108 Mbits/sec

The 5GHz WiFi shown above goes way beyond anything I was expecting.

I observe a connect speed of 150Mbits and a throughput of ~108Mbits/sec..

That's impressive considering the link speed is measured at full-duplex and the WiFi throughput only operates at half-duplex.

Well done Sony, I think this deserves an enthusiastic golf clap. :D

Battery test

Clock frequency managed by SetCPU

Clock: 384-972MHz

Gov: msm-dcvs

IO: cfq

One day of no real use, just carried around and shown to a few people and reading a few txt and emails.

Screen was on 23mins during the 24hr period.

Google Play Service is up to it's usual tricks of holding the system awake, but does fade away when other processes are used more extensively.

The phone signal seems to be pretty good as other XPERIA phones I own struggle to hold a 100% 'good' signal which uses less power.

See other attached pics for detailed break down of battery/system use.

[Update]

Just took a few quick pics on three Sony Ericsson phones.

12MP Sony XPERIA S [JB 4.1.2]

5MP Sony XPERIA C1905 [JB 4.1.2]

2MP Sony Ericsson K610i

The settings are the same on all cameras

Not the best photos(wont be winning any awards), but you can see the slight blue tint in the C1905 picture.

Worryingly the SE K610i takes a pretty good photo for a 2MP camera