Trusted Reviews is supported by its audience. If you purchase through links on our site, we may earn a commission. Learn more.

UMI Hammer S Review



rating-star rating-star rating-star rating-star rating-star


  • Cheap
  • Well-made and eye-catching
  • Decent battery life


  • Sluggish gaming performance
  • Some apps won't install
  • No NFC

Key Specifications

  • Review Price: £90.00
  • MT6735 quad-core chipset
  • 16GB storage
  • 3200mAh battery
  • USB Type-C
  • Android 5.1

What is the UMI Hammer S?

The Hammer S the latest low-cost Android phone from Chinese maker UMI. It offers a Mediatek MT6735 quad-core chipset, 5.5-inch 720p HD screen, 2GB RAM, 16GB internal memory, a Sony-made 13 megapixel rear camera, fingerprint scanner, USB Type C and Android 5.1.

All of this is contained within a part metal, part plastic casing which calls to mind the design of the vastly more expensive iPhone 6S. The UMI Hammer S retails for around $140 / £90 from retailers such as Pandawill.

UMI Hammer S – Design

Over the past few years we’ve seen a real trend developing for smartphones made partly or even entirely with metal casings.

There’s no doubt that a metal body offers a more premium feel when compared to cheaper plastic, and this ethos is now trickling down to the budget end of the spectrum. The UMI Hammer S is somewhere in the middle, as it has a metal chassis with a removable plastic back plate.

The frame gives the unit quite a bit of heft, increasing the overall weight to 168g – not excessive in the phablet arena, but still pretty chunky, especially when compared to the all-plastic Xiaomi Redmi Note 2.

It’s clear that the designers at UMI took a lot of inspiration from Apple’s iPhone 6 when creating this handset. The bottom edge even has the same style speaker grille, and the rounded edges give off a similar vibe.

Related: Best cheap phones
UMI Hammer S
From the back however the Hammer S sets itself apart, with a central camera, LED flash and fingerprint scanner. The volume rocker and power button are both located on the right-hand side of the device, with the top edge housing the 3.5mm headphone socket and IR blaster.

Charging and data transfer takes place via the USB Type C connection on the bottom edge, making this one of the first low-cost phones to use the new standard.
The budget UMI Hammer S fingerprint scanner is an impressive addition at this price point. Sitting in the phone’s home button it lets you set the Hammer S to only unlock once its holder has proven their identity. I found the scanner works well and the device unlocks quickly with a single touch.

UMI Hammer S – Display

The Hammer S has a 720p HD 5.5 LCD screen, which offers a pixel density of around 294 ppi. The quality of the screen is surprisingly decent for a phone costing as little as this, with brightness and contrast both being excellent.

In fact, for sheer punch it rivals the Samsung Galaxy S6’s AMOLED panel. Viewing angles are also rock-steady and very impressive, and it’s only the low resolution which gives any real cause for complaint.

With such a large screen, a full HD resolution would have made more sense – it’s possible to pick out individual pixels on the panel, making text and images appear jagged or ill-defined.

UMI Hammer S

UMI Hammer S – Software

In terms of software, the UMI Hammer S is running Android 5.1 with UMI’s own UI modifications sitting on the top. It’s a fairly stock interface, with subtle changes – a different app drawer logo being about as drastic as it gets. However, Google Now is totally absent – as are all of Google’s core Apps – unless you choose to install them from the Play store yourself.

If you do it’s possible to load up the Google Now launcher which places the virtual assistant on the left-hand home screen, effectively turning the device into something more akin to a Nexus phone. I did this at the earliest possible opportunity and found it offered a much more agreeable experience.

In terms of unique software, the UMI Hammer S comes with a SuperCleaner app which allows you to free up RAM by shutting down apps, control what apps boot at start-up and clean out junk files that are no longer needed. There’s also an app that lets you to turn the Hammer S into a remote control – all thanks to the handy IR blaster on the top edge.

Another unique feature is “Smart Wake” gesture commands which activate certain elements of the phone while it’s sleeping. For example, tracing a “C” on the screen will boot up the camera, while an “M” will start the music player.

Double-tapping the screen to wake the phone is also supported. However, if you have a security lock in place – such as the fingerprint scanner – these shortcuts will wake the screen but do nothing else.

We test every mobile phone we review thoroughly. We use industry standard tests to compare features properly and we use the phone as our main device over the review period. We’ll always tell you what we find and we never, ever, accept money to review a product.

Find out more about how we test in our ethics policy.

Used as our main phone for the review period

Reviewed using respected industry benchmarks and real world testing

Always has a SIM card installed

Tested with phone calls, games and popular apps

Why trust our journalism?

Founded in 2003, Trusted Reviews exists to give our readers thorough, unbiased and independent advice on what to buy.

Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.

author icon

Editorial independence

Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. To ensure this is possible, every member of the editorial staff follows a clear code of conduct.

author icon

Professional conduct

We also expect our journalists to follow clear ethical standards in their work. Our staff members must strive for honesty and accuracy in everything they do. We follow the IPSO Editors’ code of practice to underpin these standards.