Earth-friendly initiatives are picking up steam in the mobile world just as they are with virtually every other industry, and the redesign of the wall warts we all use to recharge our phones seems to be one of the lowest-hanging fruits. The problem stems from the fact that the chargers continue to draw prodigious power even after the phones to which they're attached are fully charged, leading to millions of wasted watt-hours year in and year out. The problem's so fricking big that the top five handset manufacturers put aside their differences long enough to agree on a standard for rating how "green" chargers are, and O2's British outpost wasted no time in jumping on the bandwagon with a universal charger said to be some 70 percent more efficient than your average brick. We imagine most other carriers are going to follow suit on this -- at least, they should -- and at £14.99 (about $22), it looks like there ain't much of a premium for saving the planet. Cheers to that, we say.

We couldn't deny that the ASUS-built O2 Xda Zest was a real, live, breathing mobile, but at long last the carrier has made the phone available for purchase. Hailed as the first O2 Xda to be offered on a Pay&Go prepaid plan (as well as a traditional postpaid plan), the Windows Mobile 6.1-based unit can be acquired on November 17th for £249.99 ($392) with the Pay&Go option or as low as free on certain Pay Monthly contracts. As a refresher, this one brings a 2.8-inch display, a free fortnight of the CoPilot Sat Nav software, a 3-megapixel camera, multimedia player, WiFi and HSDPA.

Sure enough, the ASUS-built O2 Xda Zest is more than just a figment of someone's imagination, though speaking of imaginations, we simply can't hear this phone's name without thinking about the soap. Sorry, just can't do it. All that aside, the handset has finally made its way onto the carrier's "Coming Soon" page, where we're told that it will include Windows Mobile for opening up Office documents, a 3-megapixel camera, 3G, WiFi, 356MB of internal memory and a microSD expansion slot. Looking for more? Strap yourself down and wait until November, vaquero.

[Via CoolSmartphone]

We all can remember a time when our mobile Internet experience consisted of the painful trickling bytes that only GPRS can deliver. It would seem O2's trying to turn German's frowns upside down by broadening its EDGE footprint with 700 GPRS sites getting a speed bump from a measly 53kbps to a more pleasant 236kbps. A further 4500 sites are green lighted for upgrade and that can be expected before the end of the year. O2 has also noted that 75 percent of its UMTS network has already been upgraded to 3.6Mbit HSDPA and they are working to roll out HSUPA in 2009.

Sony Ericsson finally came clean with that September 30 launch date for the XPERIA X1 this morning, and now the carrier situation is starting to resolve itself -- as previously hinted, Vodafone will launch the sleek WinMo slider in the UK, and both Voda and O2 will have it in Germany. O2 UK hasn't confirmed anything yet, and we still haven't heard from any carriers in the third launch country of Sweden, but we'll keep you posted over on Engadget Mobile as soon as we hear anything.

We've known that a pay-as-you-go iPhone 3G plan was in the works at O2 since June, but the carrier has at long last fessed up and provided the formal introduction. The iPhone 3G Pay & Go plan will be live on September 16th, enabling users in the UK to purchase the handset sans contract for £349.99 (8GB) or £399.99 (16GB). Yeah, it's quite a bit more than free on contract, but those prices do include unlimited browsing and WiFi for the first 12 months after the phone is activated. Once that honeymoon ends, you're looking at £10 per month to keep browsing. Also of note, Visual Voicemail is conveniently omitted from Pay & Go phones, but if you're cool with that, you can get going in a fortnight by heading to your local O2, Apple or Carphone Warehouse store.

[Via Stuff, thanks to everyone who sent this in]

The Windows Mobilicious i900 Omnia from Samsung definitely qualifies for the upper echelon of 2008's crop of smartphones, thanks in no small part to a 5 megapixel cam, capacitive touchscreen, and a UI that seems to do a bang-up job of concealing WinMo's ancient visuals. That's all well and good, but most of us don't live in a locale where the Omnia has launched on a carrier -- which is precisely why we should all be nice and jealous of our British friends righ about now. It seems the 16GB handset is now available through O2 over in those parts, and what's more, it's straight-up free if you sign up for a £35 (about $65) plan. Hey, American carriers, you guys paying attention here?

What could possibly constitute a "zesty" smartphone? We're not sure, but if O2's latest Xda device intends to live up to its name, we're going to find out. An ASUS-sourced handset bearing the "GM5 / Crystal / Xda Zest" name just garnered approval from the Global Certification Forum, and as we all know, anything starting with "Xda" is pretty much a lock to see duty on O2 as a Windows Mobile smartphone. Nothing is known about the thing at this point beyond what the GCF tells us, which ain't much: triband GSM, 2100MHz WCDMA with video calling, and -- you'll never believe it -- it supports "browsing." Hot dog!

[Via the::unwired]

Vodafone just went public with the information you already knew, New Zealand will see the world's first iPhone launch at 00:01 local time on the 11th. That's almost a full day before any New York, propaganda farmer gets his. In the UK, O2 is now taking pre-orders (one per customer) on a first come, first serve basis. Better yet, your new slab of 3G will be delivered to your home on the 11th of July by courier where you can activate it from the digital comforts of iTunes. So civilized.

[Thanks to everyone who sent this in]

Read -- O2 UK
Read -- Vodafone NZ

Last we'd heard, O2 was well out of Asia with remnants of the firm regrouping as MWg to forge ahead with some of O2's remaining projects and start blazing a new trail. Be that as it may, IT168 appears to have details of a clearly O2-branded "Xda Vista" with a WVGA display, NVIDIA graphics chipset, Windows Mobile 6.1, GPS, and pretty much every other feature a Windows Mobile power user is clamoring for these days. Those are downright modern specs, which means this thing was likely crafted after MWg came into existence -- or at the very least, after it was known that O2 Asia would go away -- so we're not sure what's going on here. Is it a fake? If not, will it end up getting rebranded as a MWg model by the time it's released? Then again, with a WVGA display and HSDPA, do we really care what it's called?

[Via Slashphone]

Motorola so had this down pat last year, but we suppose O2 is just showcasing its pedal-powered charging system now that such devices are all the rage. Just days after we had a look at two unorthodox chargers from Orange, along comes rival O2 with a bicycle-related alternative. Reportedly, the eco-friendly device will be demonstrated at the O2 Wireless Festival in London's Hyde Park, but unfortunately, each of the demo bikes will be stationary. Still no word on whether O2 has a mind to take this thing commercial, but for cyclists the world over, here's to hoping it does.

[Thanks, Adam]

It's a far cry from free, so just how badly do you want to avoid that postpaid contract? O2 had posted pricing for the iPhone 3G when purchased through its Pay & Go prepaid program, showing £300 (about $591) for the 8 gigger and a brutal £360 (about $709) for the 16, though the information was mysteriously pulled just moments later and replaced with a promise that details (the very same details they've already leaked, we presume) would be available "shortly." Though those sticker prices will eat holes through even the mightiest of wallets, buyers will take some comfort in the knowledge that they include six months of WiFi access, after which it'll run £10 (about $20) a month.

[Via TUAW]

The UK's O2 has apparently given six employees the boot and are investigating another 20 after it came to light they were using their 20 percent staff discount to buy iPhones and sell them on eBay. While no exact number was given, apparently they bought "noticeable quantities" of everybody's favorite -- and now discontinued -- set, to help pad their retirement fund. Of course, with handset sales likely stagnating while everybody waits on the iPhone 3G, you'd think O2 might have given them a break for clearing out all that old stock.

[Via RCRNews]

*8GB iPhone 3G on £45 and £75 monthly tariffs. £99 on O2's £35 tariff and new £30 tariff. All tariffs include unlimited WiFi, Visual Voicemail, and reduced international roaming under an 18-month contract.

Heh, not exactly free but still not bad. Certainly better than the situation when the iPhone was originally launched in the UK. O2 is also offering the iPhone 3G under a Pay & Go deal without the 18 month contract. Details of that, however, must still be worked out before the July 11th launch date.

[Thanks to everyone who sent this in]

Read -- Pay Monthly
Read -- Pay & Go