T-Mobile Sidekick 4G Review

Believed at one point to be utterly annihilated from existence, which blackened its reputation somewhat with the mini meltdown that occurred back in late 2009, the lovable Sidekick line is alive and beating once again. Still placing its emphasis on the messaging and social networking oriented aspects, the reincarnated T-Mobile Sidekick 4G brings back the popular line with its new manufacturer in Samsung and involvement with the Android platform – as opposed to the forgettable Danger OS which previously powered the Sidekick. Naturally, the handset has been given a modernized makeover that should appeal to a lot of people; even if you haven’t experienced one before. Moreover, its $99.99 on-contract cost from the onset is no doubt one attraction that makes it uber affordable for anyone, but can it contend with the likes of other highly prized QWERTY style Android handsets out there?

The package contains:

  • T-Mobile Sidekick 4G
  • 2GB microSD card
  • microUSB cable
  • Wall Charger
  • microSD card adapter
  • Quick Start Guide
  • Terms & Conditions


First and foremost, the Samsung-manufactured T-Mobile Sidekick 4G embodies all of the design cues that instantly make it a recognizable Sidekick, but it doesn’t quite hit the mark as being the prettiest one we’ve seen. Employing an entirely plastic body, it feels a little bit on the cheap side, but that’s generally what you expect out of a youth inspired device like this. Furthermore, we’re surprised to find this hefty sized (0.6” thick) handset packing some weight (5.7 oz) with it – especially more when it’s made out of plastic. Still, the three toned handset (black, white, & pink in our case) has plenty of character to stand out while retaining a solid feel, but don’t think for a second that it’ll compete with the likes of the industrial designs from HTC’s camp. Then again, it’s targeting a whole different demographic.

You can compare the T-Mobile Sidekick 4G with many other phones using our Size Visualization Tool.

Even though we’re happy to see the Sidekick 4G flaunting a captivating 3.5” WVGA (480 x 800) LCD display, it actually isn’t the highest resolution display found with a Sidekick – that noteworthy recognition goes to the Sidekick LX with its 480 x 858 resolution. Nonetheless, it still produces some stellar detail that even manages to provide some distinctive outlines with the most miniscule of text on screen. Not stopping there, we’re soundly impressed with its superb and robust color production – which is amazing considering it’s a regular LCD display as opposed to the AMOLED-based screens that are prominent amongst Samsung’s stable. And finally, the great viewing angles mean that there are no problems trying to get a good fix of what’s on screen in the direct view of the sun.

Now if there one design flaw that we notice, it has to be none other than the placement of its physical buttons around its display. Obviously, it’s actually normal to see soft keys of some sort grazing the corners of any Sidekick, but seeing that this is an Android powered smartphone, the placement of the home and jump keys are annoyingly out of reach. Fortunately though, they’re all sufficiently sized and offer that satisfying clicky feel when press. Meanwhile, the circular optical pad is a fitting choice for this modernized Sidekick device and allows for a better placement of the cursor when typing something.

Adding to its venerable usability, we find a 0.3-megapixel front facing camera above its display that can be used for video chat with the handset’s featured Qik app. And even though we miss the illuminating trackball found with previous models, which is mainly used for notifications, the tiny LED notification light on the Sidekick 4G is a decent replacement.

Sadly, gone is the beloved swivel mechanism that’s been a staple with most Sidekicks in the past, but rather, Samsung has opted to differentiate its model with a “pop-tilt” hinge mechanism. Getting the keyboard exposed is a little bit unusual since it requires you to push up and down on the lower portion of the display while holding it in landscape. From there, it snaps solidly into place and feels sturdier than the Z-hinge found with the T-Mobile G2.

Without question, the 5-row keyboard layout of the Sidekick 4G is resoundingly one of the more favorable ones out there on Tmo’s lineup. Granted that the rubbery and raised buttons are somewhat tiny in size, we adore how there is plenty of spacing between them to perfectly allow accurate presses without hassles. And of course, dedicated buttons like the “@” and Google Voice Search are highly appreciated, but the dedicated row of buttons for numbers are especially valuable. All in all, we’re quite fond of the keyboard and it seemingly follows in line to what’s expected out of a Sidekick.

T-Mobile Sidekick 4G 360-degrees View:



1. Speardj unregistered

So 10 hours of heavy 4g usage is poor battery life? Maybe I'm just used to the poor battery life I get with my G1, but that seems pretty fantastic to me. Considering this phone, even though I'm not the target demographic


Posts: 3131; Member since: Jan 12, 2010

Yea that seems kinda odd considering. I wish my TB got 10 hours of battery life PERIOD. 3G DOESNT.

3. 2bits unregistered

I'm curious if flash 10.2 was installed by an upgrade? If not then that's why you got the jitters because you really need Flash 10.2!! 10 hours of battery life is outstanding from any 4G phone. I get only 3 hours on my Samsung Epic 4G!! I had to purchase a 3000 mAH battery and now it's .8 inches thick! So do your homework reivews and compare apples to apples like the Samsung Epic 4G to this phone!

4. TechNado unregistered

It may not be able to compete with the top tier phones out there, but the Sidekick 4G is still an excellent choice for heavy messaging and/or social networking users. Hey we are going to aggregate your review and bring more people directly this link. Come check us outwww.technado.com

6. bowlski unregistered

i don't understand why just because the sidekick 4g has the android platform, it needs to compete with top tier phones. i honestly think it's targeting a different market than that. this is a very differently designed phone compared to the top tier, so why should it have to compete in all other aspects?

7. Erika unregistered

is this phone available here in the Philippines? is it openline already?

8. rpm unregistered

This phone is still the only choice for me. TMobile is the only carrier that works in my house. Even considering other carriers, there is not too many side-sliders with a 5-row hardware keyboard, and I won't live without that. This is the only one that has raised edges when open (like the G1) and that makes it way easier to hold. It also has hardware buttons which I greatly prefer. I get ~30hours of normal-use battery, and >10 with very heavy 4G use. If it were dual-core, had a better camera with flash, and had a bigger/better display, it would be the ultimate phone!
Sidekick 4G
  • Display 3.5" 480 x 800 pixels
  • Camera 3 MP / 0.3 MP VGA front
  • Processor Samsung Exynos 3, Single core, 1000 MHz
  • Battery 1500 mAh(6.50h talk time)

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