TECNO’s Spark 50s 5G comes with a 6,500mAh battery and 45W charging. Alongside it is the Spark 50C, a 4G phone with a 5,200mAh battery and 15W charging. If you’re choosing between the two, battery and charging favour the 50s. Water resistance goes the other way, at least on TECNO’s advertised ratings.
The Spark 50s launched on 16th October 2026, with sales scheduled to begin on 20th October.
The Spark 50C loses some of the Spark 40C’s battery capacity
The Spark 50s has 25% more battery capacity than the Spark 50C, so it has a larger reserve of charge to draw from as you use it. Its 45W charging is also three times the Spark 50C’s rated power. That’s a useful combination if you use your phone heavily and need quicker top-ups. We still need testing to know how long either phone lasts, though, and three times the charging power doesn’t mean a full charge takes a third of the time.
When we compared the Spark 50 with the Spark 40 in May, slower charging was one of our main complaints. The separate 50s combines a large battery with 45W charging, but the 50C gives up some of what its own predecessor had: the Spark 40C has a 6,000mAh battery and 18W charging. So with the Spark 50C, you’re getting about 13% less battery capacity and lower charging power than the 40C.
The Spark 50C also keeps the Spark 40C’s Helio G81 processor, the chip that runs your apps, and the same rear and front camera resolutions. You do get a slightly larger screen and Android 16 instead of Android 15.
| Specification | Spark 50s 5G, India | Spark 50C, global listing | Spark 40C, global listing |
|---|---|---|---|
| Mobile network | 5G | 4G | 4G |
| Processor | MediaTek Dimensity 6400 | MediaTek Helio G81 | MediaTek Helio G81 |
| Screen | 6.78-inch, 120Hz | 6.78-inch, 120Hz | 6.67-inch, 120Hz |
| Resolution | 720 x 1600 | 720 x 1600 | 720 x 1600 |
| Rear / front camera | 50MP / 8MP | 13MP / 8MP | 13MP / 8MP |
| Battery | 6,500mAh | 5,200mAh | 6,000mAh |
| Charging | 45W | 15W | 18W |
| Android version at launch | Android 16 | Android 16 | Android 15 |
| Numerical OS/security update commitment | Not announced in checked launch material | Not announced in checked product material | Not stated on spec sheet |
The Spark 50s has a Dimensity 6400 processor and a 50MP rear camera, compared with the Helio G81 and 13MP camera in the 50C. All three phones have screens that can refresh up to 120 times a second, which can make scrolling smoother. The resolution stays the same, though. You’re getting a bigger screen on the new models, with the same number of pixels spread across it.
Water resistance, RAM and regional differences
TECNO gives the Spark 50C IP68 and IP69 dust and water resistance ratings, while the Spark 50s has IP64 Pro dust and splash protection. These ratings describe how well a device resists dust and water getting inside. On paper, the 50C has the stronger water protection. TECNO’s overview doesn’t say how deep it can be submerged or for how long, and we haven’t tested either phone’s protection ourselves.
The RAM figures are easy to misread. TECNO advertises 12GB for the 50C, but 8GB of that is extended RAM: storage space the phone borrows to use as memory. The physical RAM is 4GB. That’s the figure to compare with the 6GB and 8GB configurations of the 50s.
You’ll also need to check which version is being sold where you live. TECNO’s global Spark 50C spec sheet lists 64GB, 128GB and 256GB storage, plus NFC, the short-range connection used by compatible contactless services. The Bangladesh sheet lists 64GB and 128GB and omits NFC. If you want the larger storage option or NFC, confirm those details on the local version before buying.
Both phones also advertise calls and messages without mobile coverage. TECNO explains that the 50C’s FreeLink 2.0 connects devices directly over Bluetooth, so compatible nearby users can stay in touch when there’s no mobile signal. The claimed range is up to 1.5km in open, unobstructed conditions. How far it works will depend on what’s around you.
If you already own a Spark 40C, we see little reason here to replace a working phone. The processor hasn’t changed, and you’d be giving up battery capacity. Between the new models, the 50s has clearer hardware advantages, especially its charging and 5G support. We’ll need the 50C’s actual local price and the configurations sold alongside it to judge whether paying more for the 50s makes sense.
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