Samsung showcased its long - rumored slim earpiece at theGalaxy Unpackedevent in January , and Apple is expected to be grow an iPhone 17 Air . But it ’s Tecno that has a truly ready slim earphone that does n’t compromise on stamp battery capacitance . The Tecno Spark Slim is what I expect a company to plunge when it has the word “ Slim ” in the nickname . It ’s got a 5,000mAh+ shelling , less than 6 mm thickness , and more than one camera .
Tecno announce the launching of the “ world ’s thinnest smartphone ” a twosome of days before Mobile World Congress 2025 . I got my hands on the mold prototype , which is say to be ready for a “ staggered launching . ” Here ’s why I intend this is what theGalaxy S25 Edgeand iPhone 17 Air should be .
A bigger battery than the Galaxy S25 Ultra
base on hearsay , Apple and Samsung are expected to compromise on the barrage electrical capacity of their slender phone . For context , theSamsung Galaxy S25 Ultrafeatures a 5,000mAh battery , and the Galaxy S25 Edge will likely have a small shelling .
However , the Tecno Spark Slim pack a 5,200mAh cell that is vainglorious than most mainstream flagship smartphones . It carries this in a slimmer contour element than every headphone on the market place right now . With that capacity , it is potential to feature all - day barrage fire life .
The Tecno Spark Slim measure 5.75 mm fragile . By comparability , Samsung ’s baseGalaxy S25is 7.2 mm thick , while the Galaxy S25 Ultra goes up to 8.25 mm . As for Apple , theiPhone 16is 7.8 mm thick , whereas theiPhone 16 Pro Maxmeasures 8.25 mm . The Galaxy S25 Edge is said to be around 6 mm in thickness .
It fits the 5,200mAh battery without compromise on dissipated charging . You get the same 45W charging speed that you ’d find on the Galaxy S25 Ultra . It ’s awing that they fitted a big battery that burden tight in a 5.75 mm slim form factor .
Tecno Spark Slim is everything you’d want from a thin phone
In my handwriting - on , the Spark Slim matte like a phone that I ’d love to apply . It features a 6.78 - inch AMOLED video display with curved sides . Unlike the Galaxy S25 Edge ’s level side , the curving side make the Tecno headphone seem slender than it in reality is . The in - handwriting feel is cracking — close to what you ’d expect from a 2015 telephone set but with a big , sharper , and better show .
The screen was easily legible in brilliant indoor lighting . It is rated to fork up 4,500 nits of bill brightness on support content . The Tecno Spark Slim was also smooth to scroll through the user interface , thanks to the 144Hz refresh charge per unit on the exhibit . It packs a 13MP selfie shooter , too .
Tecno has n’t specify the chipset entropy on its latest earphone . All we fuck justly now is that it ’s an octa - core C.P.U. . I ’m skeptical about the heat management system if it fits a flagship central processing unit in this invention , but we ’ll await and see . For now , I can confirm that it supports Google Gemini .
The Tecno Spark Slim rollick a dual rearward television camera frame-up on the back . Both camera have 50 megapixels to hand over sharp photos . I do n’t ask them to be Samsung or Apple quality , but it ’s good to have a dual - photographic camera setup when the iPhone 17 Air is rumor to have a individual rearward camera .
While the Tecno Spark Slim seems like a wonderful thin phone , it ’s still a concept . It is say to have a staggered launch , but there is no classic launch date yet . I ’m all in on slim equipment if they do n’t compromise on screen caliber and battery capability .
