no jailbreak required – thank verizon (& fcc) for shipping factory unlocked iPhone 5! yes it works on h20, straight talk, etc
[ if you found this info helpful, please consider buying me a beer >>>>>>>>>>>>>>>> ]

you just need to cut the current gsm sim card, put it in and vu a la – it will work! (i’ve got it working with h2o and t-mobile) – no jailbreaking / gevey required.

here are the instructions:

1) cut the sim card to nano size.

basically take the current nano-sim out, put it next to your current sim card and use a big knife
here’s a very helpful printout

tip: use an old, non wokring sim-card to practice

2) in order to change your apn settings so Internet works, you’ll need to enable “cellular network data” option under settings > general > cellular.
t-mobile sim card ($20 at any t-mobile store) is your ticket
then, use this sim swipe trick:

then change your APN settings (e.g. h2o, here are others)

(when using gsm, 5 supports up to 6gb down speeds – “4g”)
ps: good luck and check the news before you upgrade iOS 6 (when update comes out)

here are the crucial and (some) omitted differences between new iPhone 5 and “old” iPhone 4S. graphic from the apple.com website

3 things that weren’t mentioned during latest apple keynote:

- 3 different models of the iPhone 5 vs 2 models of 4S (CDMA / world phone)
- no more support for 2G on iPhone 5? (not confirmed yet)
- nano-sim

- battery life only 10% better then 4S
more iPhone technical specifications:

iPhone 5	iPhone 4S
Price (on contract)	$199 16GB, $299 32GB, $399 64GB	$199 16GB, $299 32GB, $399 64GB
Processor	Apple A6	Dual-core Apple A5
Memory	1GB (tbc)	512MB
Display	4-inch IPS 1,136 x 640	3.5-inch IPS 960 x 640
Pixel Density	326 ppi	326 ppi
Storage	16GB / 32GB / 64GB	16GB / 32GB / 64GB
Primary camera	8 megapixel AF with flash and f/2.4 aperture	8 megapixel AF with flash and f/2.4 aperture
Secondary camera	“FaceTime HD” at 720p	VGA at 30fps
Video recording	1080p at 30fps	1080p at 30fps
Cellular	GSM / CDMA / LTE	Hybrid GSM / CDMA “World Phone”
WiFi	Dual-band 802.11 a/b/g/n	802.11 b/g/n
Bluetooth	Bluetooth 4.0 (tbc)	Bluetooth 4.0
Orientation sensing	Accelerometer, digital compass, gyroscope	Accelerometer, digital compass, gyroscope
Navigation	A-GPS, GLONASS	A-GPS, GLONASS
FaceTime	WiFi and Cellular	WiFi-only (iOS 5)
SIM standard	nano-sim	microSIM
Battery life	Up to 8 hours talk time on 3G Up to 8 hours data on 3G Up to 8 hours data on LTE Up to 10 hours data on WiFi Up to 40 hours audio Up to 10 hours video Up to 225 hours on standby	Up to 8 hours talk time on 3G Up to 14 hours talk time on 2G Up to 6 hours data on 3G Up to 9 hours data on WiFi Up to 40 hours audio Up to 10 hours video Up to 200 hours on standby
Weight	112 grams / 3.9 oz	140 grams / 4.9 oz
Dimensions	123.8 x 7.6mm	115.2 x 58.6 x 9.3mm
Colors	Black / White	Black / White

ps: here are all of the screenshots from apple’s website of 4S tech specs:

damn google. i just spent 2 hours, trying to find the thinnest iphone bumper case available. the problem is – misleading links! they say it’s a bumper, but it’s a case, as in it has a back
call me crazy, but iphone 4 is gorgeous and i don’t want to cover the back of it …

so here are my findings – the really thinnest iPhone 4 bumpers:

1) 0.9 mm – Sinjimoru InLite Ultra Thin – $15

exactly what i’ve been looking for, but: no protection, cheesy square dongle  & questionable quality

2) 1.5 mm – ultraSlim bumper – $13

unfortunately, the buttons are hard to press on this one

3) 2.5 mm – UCO skinny – $24

the irony? the thickest, seems best made (but still thinner, then the original apple iphone bumper)

others: nude, reveal & sgp (~2 mm)

run up, thinner contenders – but NOT bumpers:

zero 5 – 0.5 mm – iphoneCaze.com – $19

and the thinnest of them all? (makes you wonder, what’s the point):
pinio slice 3 – 3.5 mm – $35 … however if you google “thinnest iphone +bumper mm“,
you’ll see $5 0.3 mm knock offs