Another ultra-thin smartphone is heading to sale, the iPhone 17 Air will likely only envy its battery size Home News Tecno is not the best-known company in our country, but it falls under one of the world's largest smartphone manufacturers, along with Infinix It often makes itself known through interesting concepts, which, however, rarely make it to mass production The Tecno Spark Slim, as another ultra-thin smartphone, will apparently make it to store shelves Sdílejte: Vašek Švec Published: 24. 8. 2025 14:30 Advertisement When Tecno introduced the concept of the ultra-thin Tecno Spark Slim smartphone at this year’s WDC, it was supposed to be the thinnest current smartphone in the world. Compared to the concept, however, its thickness increased by 0.2 mm to 5.95 mm, making the Samsung Galaxy S25 Edge currently unsurpassed in this regard. Tecno, however, scores in another area, and that is battery capacity, which here is 5,200 mAh. 5,200 mAh in an ultra-thin body With this capacity, I dare say that with proper optimization, it will not represent a painful compromise in relation to the lowest possible body thickness. For comparison, the aforementioned Samsung Galaxy S25 Edge contains a battery with a capacity of 3,900 mAh. According to leaks from trusted sources, the upcoming iPhone 17 Air is expected to offer an even smaller 2,900mAh battery, but it would reportedly have an even thinner profile, at 5.5 mm at its thinnest point. Although – with all due respect to Tecno – I believe that Samsung and Apple will manage optimization somewhat better, it does not seem probable to me that they would be able to compensate for the deficit in battery capacities. As for the other features of the Tecno Spark Slim, another ultra-thin smartphone on the market, even in its serial form, should offer a metal construction, a 6.78″ AMOLED with 4,500 nits brightness and a 144Hz refresh rate. Two 50 MPx cameras on the back should also be retained, with one being the primary and the other an ultrawide, naturally. Another ultra-thin smartphone is heading to sale, the iPhone 17 Air will likely only envy its battery size Vašek Švec News Vašek Švec News Charging is expected to be at 45 W, and according to unconfirmed reports, everything will be powered by a Qualcomm Snapdragon 7 Gen 3 chipset. The availability in specific markets remains a question mark, however, in India, the phone is expected to go on sale for 80,000 rupees, which translates to approximately 19,000 CZK. This, given the alleged chipset, is not exactly cheap, but we will see what the reality will be. What do you think of another ultra-thin smartphone, this time from Tecno? Source: GSMArena.com About the author Vašek Švec Vaška prakticky od dětství zajímaly nové technologie, ať už se jednalo o telefony, počítače či třeba auta. V době, kdy většina jeho kapesného padla na… More about the author Sdílejte: Apple iPhone 17 Apple iPhone 17 Air Qualcomm Samsung Galaxy S25 Edge Tecno Tecno Spark Slim