Holding it for the primary time, I caught myself double-checking if it even had a battery inside. That’s not a joke. It’s so gentle (simply 166 grams) that the thoughts instantly questions what it’s touching. However after spending a number of days with it — utilizing it for calls, music, scrolling, and even a little bit of gaming — I can safely say: this factor is actual, and it’s surprisingly sensible.
Design: The First Factor You Discover Is How Little There Is to Discover
Let’s begin with the plain. 5.75 millimeters. That’s not a quantity you may simply visualize till you maintain the telephone. It’s roughly three bank cards thick. You can slide it between the pages of {a magazine} and neglect the place you set it.
TECNO’s engineers, it appears, have been on a mission to make a press release — and so they succeeded. The corporate even admitted that early prototypes have been too gentle. Customers didn’t imagine there have been actual parts inside. So TECNO truly added weight to make it really feel extra like a “telephone.” It’s the form of ridiculous but plausible engineering anecdote that makes you smile.
Regardless of its measurement, the TECNO (SPARK) Slim doesn’t really feel fragile. The recycled aluminum body mixed with a stainless-steel spine provides it a shocking stiffness. There’s additionally a ceramic again choice — it’s cool to the contact and resists fingerprints. It’s a type of supplies that feels immediately premium, even when it’s understated.
Visually, TECNO made a sensible transfer. As a substitute of chasing the large digicam island development, they went for a horizontal, pill-shaped digicam module that sits practically flush with the physique. Clear. Balanced. Assured.
Show: Vibrant Sufficient to Disgrace Some Flagships
Once I turned on the 6.78-inch curved AMOLED show, I needed to squint — not from disappointment, however from brightness. TECNO claims a peak of 4,500 nits, and whereas I didn’t have a lightweight meter to confirm it, I can affirm it’s extraordinarily shiny. Even below noon daylight, the display screen remained legible.
This panel runs at 1.5K decision (2712×1224) and helps a silky-smooth 144Hz refresh price. Scrolling by means of Twitter (or X, when you desire) felt extra fluid than on some $1,000 flagships.
Movies look punchy with out oversaturation, and the curved edges subtly improve immersion — not in a gimmicky “waterfall” manner, however simply sufficient to make borders disappear. The 20:9 side ratio feels pure for social media and one-handed use, although it would really feel tall for panorama gaming.
There’s additionally HDR help, which, mixed with that top brightness, makes YouTube and Netflix playback genuinely pleasant.
Battery: The Actual Magic Trick
Now, the massive thriller — how does a 5,200mAh battery match inside a 5.75mm body? I requested the identical query. TECNO says it makes use of a battery that’s solely 4.04mm thick with 800 Wh/kg vitality density. That’s industry-leading territory, achieved with out silicon components.
In my real-world testing, the telephone comfortably lasted a full day of average use — about 6.5 hours of screen-on time, with Wi-Fi, 5G standby, and occasional digicam use. Not unhealthy for one thing this skinny.
It helps 45W quick charging, which took it from 10% to 70% in roughly half an hour. That’s spectacular, although the telephone warms up barely throughout charging (understandably so, given its measurement).
There’s a refined irony right here: a telephone this slim providing higher endurance than bulkier mid-range rivals.
Efficiency: Lean, however Not Weak
Beneath the hood, the TECNO Slim runs an octa-core Mediatek Helio G200 processor. My unit had 8GB+5GB of RAM and 256GB of storage. Not nice, not horrible 😉
In day by day use — messaging, looking, watching movies — it by no means stuttered. Apps launched rapidly, multitasking felt snappy, and even average gaming was high quality. RAID Shadow Legends at medium settings ran with out critical body drops.
There’s even an optical fingerprint sensor constructed into the show, which within reason fast, although face unlock was quicker in good lighting.
Cameras: Small Physique, Huge Confidence
Right here’s the place I anticipated compromise. How do you match good optics in a 5.75mm telephone? But TECNO one way or the other pulled it off.
The twin 50MP rear cameras produce genuinely first rate ends in daylight — sharp edges, balanced distinction, and correct colours. Low gentle is the place physics inevitably pushes again; noise creeps in, and particulars fade a bit. Nonetheless, the outcomes have been higher than I anticipated.
The 13MP entrance digicam is competent. Pores and skin tones look pure, although highlights can blow out in direct daylight.
Then there’s the interactive gentle band across the digicam — it pulses subtly throughout notifications or charging. It’s a gimmick, maybe, however a captivating one.
Ergonomics and Each day Life
After three days with it, one thing sudden occurred — my thicker iPhone began feeling clunky. The TECNO Slim redefines what “moveable” means. It slips into denims with no bulge, disappears in a jacket pocket, and one way or the other makes each different telephone really feel outsized.
Typing on the curved display screen took some getting used to, and I did by accident contact edges whereas scrolling a number of instances. Nonetheless, these have been minor annoyances in comparison with the general consolation.
One refined disadvantage? Warmth administration. Throughout prolonged gaming or charging, you may really feel heat spreading by means of the skinny body. The ceramic again helps, however physics has limits.
Sturdiness Considerations — However Not Dealbreakers
I didn’t dare bend-test it (that may’ve been irresponsible). However I did by accident depart it below a stack of papers in a single day. It survived — completely high quality. The stainless steel construction appears to do its job.
Closing Ideas: Magnificence in Restraint
The TECNO Slim isn’t simply one other mid-range smartphone. It’s a design assertion, a technical achievement, and, in a wierd manner, a nostalgic reminder that innovation can nonetheless shock us.
This machine doesn’t scream for consideration; it earns it. It’s quiet, purposeful, and nearly poetic in execution. The truth that TECNO managed to suit a 5,200mAh battery, 144Hz AMOLED show, and twin 50MP cameras right into a telephone barely thicker than a pencil — that’s extraordinary.
Would I like to recommend it? Should you worth design, portability, and novelty — completely. If you need a telephone that appears prefer it time-traveled from the long run, this may be it.
What Stands Out Most
- The world’s thinnest telephone at 5.75mm
- Large 5,200mAh battery
- 6.78-inch AMOLED, 144Hz, 1.5K decision
- 45W quick charging
- Twin 50MP cameras
- Android 15 + 5G, Wi-Fi 7
- Unibody aluminum/ceramic design
Verdict
And maybe, simply maybe, that’s the spark (sic) we’ve been lacking. See what I did there? 😉
