Blackview Z30 Kids Smart Watch Review: a practical first “phone” for kids that’s good but not perfect

I’ve been using this Blackview 4G kids smartwatch with my 9‑year‑old for a few weeks, mainly as a first step before giving her a real smartphone. We wanted something that let her call us, share her location, and feel a bit independent, without dropping £300 on a phone she could lose in a week. On paper, this watch ticks most of those boxes: 4G, GPS+Wi‑Fi+LBS tracking, video call, SOS button, and a few games to keep her busy.

In day‑to‑day use, it feels more like a basic kids’ phone strapped to the wrist than a classic smartwatch. You manage everything through the Setracker2 app, you stick in a nano SIM, and off you go. My main goal was simple: be able to see roughly where she is and call her when she walks to school or goes to friends’ houses. For that, it mostly does the job, but there are quirks you should know about before buying.

The watch is clearly built for kids: chunky, bright, and quite tough. My daughter wears it to school, to the park, and it’s already been dropped a few times and splashed with water. So far it’s survived just fine. She likes the little camera, the watch faces, and being able to call us herself without borrowing someone else’s phone. From her point of view, it’s fun. From my point of view, it’s a safety tool that sometimes behaves like a gadget.

If you’re expecting the same tracking accuracy and smoothness as an Apple Watch or a high‑end Garmin, you’ll be disappointed. If you see it as a reasonably priced safety device with phone features and accept that GPS and battery aren’t perfect, it starts to look more sensible. That’s basically where I’ve landed: pretty solid for what it costs, but you need the right expectations and a bit of patience to set it up properly.

In terms of value, I think this watch sits in a pretty reasonable spot. It’s not as cheap as the no‑name kids watches you find for a few pounds, but it’s also far from the price of an Apple Watch or a proper smartphone. For what you pay, you get 4G calling, basic GPS tracking, video calls, SOS, waterproofing, and enough extras to keep a kid interested. That’s a decent package if your main goal is giving your child a controlled way to contact you and be roughly trackable without handing them a full phone.

Where the value can feel a bit mixed is if you go in expecting top‑tier performance. The GPS is not precise enough for live, detailed tracking, and the battery isn’t strong enough to forget about it for several days. If those two things are your main priority, you might be disappointed and feel like you should have spent more on a different device. On the other hand, if you compare it to other kids’ GPS watches in the same price range, it stacks up pretty well: similar or better build, similar tracking quirks, and a decent app.

The ongoing cost you have to factor in is the SIM card. You’ll need a small data plan with calls and texts. We used a cheap monthly plan and the watch barely uses data, so the extra cost is not huge, but it’s there. So you’re not just paying the upfront price; you’re also adding a small monthly fee to keep it connected. For us, the peace of mind of being able to call and locate our child is worth that, but it’s something to keep in mind if you’re on a tight budget.

Overall, I’d call the value “good but not mind‑blowing”. It does what it says, with some limits, and doesn’t feel like a waste of money. If you’re realistic about what a kids’ watch at this price can do and you just want a first step before a smartphone, it’s a sensible buy. If you expect flawless tracking and battery like high‑end gear, you’ll probably feel it’s just okay rather than great.

Design‑wise, this is clearly aimed at kids, not adults trying to pass it off as a fancy smartwatch. The Coral Blue colour we got is bright but not tacky, and my daughter liked it straight away. The watch face is a 1.75" touchscreen, rectangular with rounded corners, and a thick bezel. It’s quite chunky on a small wrist, but that’s also what makes it feel tough and easy to handle. It’s not discreet: teachers, other parents, everyone can tell it’s a kids’ gadget, which honestly I don’t mind. It doesn’t pretend to be a grown‑up Apple Watch clone.

The screen itself is sharp enough for what it does. The icons are big, the text is readable, and the brightness is strong enough outdoors. My kid never complained she couldn’t see the screen in daylight. Indoors, it’s a bit too bright at night if you forget to tweak the settings, but you can reduce brightness and you can also set school mode so it doesn’t distract in class. The watch faces are basic but fun: animals, colourful graphics, digital and analog options. My daughter changed face three times on day one, so clearly that part works for kids.

The camera is on the front edge of the watch, so kids can take selfies or short video calls holding their wrist up. The image quality is nothing impressive, but it’s enough for a quick video chat or silly photos with the “magic camera” filters. Don’t expect sharp photos to print; this is more a toy camera than a memory keeper. The LED torch is built into the side and is surprisingly useful. She’s used it to look under the bed and in the car, and it’s bright enough for small tasks, not for night hikes.

Button layout is simple: one main side button to wake the screen and access menus or trigger SOS when held, and the rest is done via the touchscreen. There’s no rotating crown or fancy controls, which actually suits kids. They learn the interface in a day. Overall, the design is straightforward, durable and clearly kid‑oriented. If you want something subtle or stylish, this isn’t it. But if you just want something that looks like a solid kids’ gadget and can take a beating, it fits the brief pretty well.

The watch comes with an 800mAh battery, which sounds big on paper for a kids’ device. In reality, how long it lasts depends a lot on how your kid uses it and how aggressive your settings are. With our setup—location updates every 10 minutes, a few short calls per day, no constant video calls, and brightness at about 60%—we usually get around a day and a half to two days before needing a charge. So roughly: charge it every night if you want to be safe, or every other night if your kid doesn’t use it much.

If you crank everything up—frequent location updates, lots of video calls, max brightness—the battery drops faster and you’ll be lucky to get a full day. On the other hand, if you reduce location frequency and limit calls and games, it can comfortably last through a school day plus after‑school activities without hitting red. For comparison, this is better than some cheap kids’ watches that die by mid‑afternoon, but it’s nowhere near a basic digital watch that runs for months. It behaves more like a small smartphone battery.

Charging is done via a magnetic cable that snaps to the back. This part is actually well done: no fiddling with tiny ports, and my daughter can plug it in herself before bed. A full charge takes around 1.5–2 hours from low battery to 100%. We usually just plug it in in the evening and it’s full long before bedtime. I haven’t seen any weird overheating while charging, and the cable feels reasonably sturdy for now, though like all proprietary chargers, if you lose it, you’re annoyed.

If you want a device your kid can wear all week without thinking about charging, this is not it. If you’re okay with adding “charge your watch” to the evening routine, the battery is fine. For us, it’s become like charging a tablet or a console controller: a bit annoying, but manageable. I’d just ignore the marketing talk about massive battery and treat it as: solid enough for a day of use, but plan regular charging.

Comfort was one of my main concerns because my daughter has fairly thin wrists and sensitive skin. The watch comes with a silicone strap and a protective case, both in soft, skin‑friendly material. The strap has enough holes to fit smaller wrists, and we managed to get a snug but not tight fit on her. She wears it to school, to the park, and around the house without complaining that it hurts or rubs. The material is soft and slightly flexible, not stiff plastic. After a few hours of sweating at the playground, there were no red marks or rashes.

That said, the watch is still quite chunky and you do feel the weight on a small arm. It’s not heavy like a metal watch, but it’s not feather‑light either. During active play (running, climbing), she sometimes twists it around to move it further up the arm so it doesn’t hit her wrist bone. It’s not a big issue, but worth knowing: this isn’t one of those ultra‑slim fitness bands. For a 4–5‑year‑old with tiny wrists, it might feel a bit big; for 7–12, it’s more reasonable.

For sleep, I’ll be honest: she doesn’t wear it every night. The watch has sleep tracking, but she found it annoying to have this block on her wrist in bed, especially when she rolls onto her side. We tried a few nights and it was fine once she fell asleep, but she always asked to take it off the next evening. So for us, sleep tracking is more of a bonus feature than a daily tool. If your kid is used to wearing things on their wrists 24/7, they might get used to it, but I wouldn’t buy it just for sleep monitoring.

Day‑to‑day comfort is okay overall. She sometimes takes it off when she gets home just to “let her arm breathe”, but she’s happy to wear it again when going out. The IP68 waterproof rating helps because she can wash her hands and play in light rain without worrying about taking it off. We don’t let her keep it on for long swims just to be safe, but splashes and showers haven’t broken it so far. So from a comfort point of view: it’s fine for what it is, but don’t expect the soft, forget‑it’s‑there feeling of a thin fitness band.

Durability was another big concern, because kids are not gentle with gadgets. So far, this Blackview watch has taken a few hits and handled them pretty well. My daughter has already dropped it from table height onto hard floors a couple of times, banged it against door frames, and scraped it along playground equipment. The screen doesn’t have any deep scratches yet, just a couple of tiny marks you only see when the screen is off and you look closely. The housing and the silicone case do a good job of absorbing shocks.

The IP68 waterproof rating is also reassuring. She’s washed her hands with it on, played in the rain, and even splashed around with water guns in the garden. No issues so far: no fogging under the screen, no weird behaviour afterwards. I don’t let her swim with it for long periods just because I don’t fully trust any kids gadget in a pool, but it has handled normal everyday water exposure without complaining. It’s definitely more robust than some cheap plastic kids watches that die after a couple of accidental splashes.

The strap and buckle feel decent. The silicone hasn’t torn, and the holes haven’t stretched out despite daily use. It does get a bit dirty over time (dust, sweat, playground grime), but a quick wipe with soapy water cleans it up. The buckle is metal and hasn’t bent or broken. The only thing I can see potentially wearing out over a long period is the charging contacts on the back if they’re constantly exposed to moisture and not dried properly, but that’s speculation at this point.

From a durability standpoint, I’d say it’s pretty solid for a kids’ gadget in this price range. It’s not indestructible, and if your kid really abuses it, you’ll probably see more scratches and maybe some issues over time. But for normal kid use—school, playground, bikes, light water—it holds up. If you want something bomb‑proof, you’ll probably have to pay more and give up some of the smart features. For a mid‑range kids smartwatch, it sits in a good spot between toughness and functionality.

In everyday use, the watch’s performance is mixed but mostly acceptable for the price. Let’s start with the most important part for parents: calling and video calling. Once the SIM is set up, voice calls work well. There’s a slight delay compared to a normal phone call, but nothing that makes it unusable. My daughter can call us from the watch using the predefined contacts, and we can call her. The sound is clear enough on both sides as long as she holds the watch near her mouth and there isn’t heavy traffic noise. Video calls also work, but the quality depends heavily on 4G coverage: on good signal, we see her fine; on weak signal, it gets laggy and pixelated.

GPS and location tracking are where things are less impressive. When she’s outside in a normal urban environment, the location is usually close to reality, with small delays. I can open the Setracker2 app and see that she’s at school or on the way home. But sometimes the position just sticks to an old point for 10–15 minutes, or jumps to a random place nearby before correcting itself. Indoors, it often switches to Wi‑Fi or LBS, which are less accurate. So if you’re expecting constant real‑time tracking like a phone on Google Maps, you’ll be disappointed. It’s more “rough idea of the area” than “pinpoint on the exact pavement”.

The extra features like pedometer, sleep tracking, and games are more for the kids than for real health tracking. The step counter is okay for motivation but not very precise. It counts some arm movements as steps, and sometimes undercounts on shorter walks. Sleep tracking is basic: it shows approximate sleep duration and light/deep phases, but I wouldn’t use it to diagnose anything. The games are simple puzzle and logic games with no internet access, which I like. They’re enough to keep her busy for a few minutes without turning the watch into a full‑on gaming device.

Overall speed is fine. The menus open fast enough, apps don’t crash constantly, and my daughter hasn’t complained about lag. The interface is simple and colourful, clearly designed for kids. For what it’s meant to do—calls, simple GPS, a few tools—it works. Just keep in mind that the tracking is not professional level, and some features like pedometer and sleep are more “nice bonuses” than reliable metrics.

On paper, the Blackview Z30 is loaded: 4G calls, video calls, GPS+LBS+Wi‑Fi tracking, SOS button, pedometer, sleep tracking, torch, games, camera, class mode, remote shutdown, and a bunch of small tools (alarm, calculator, stopwatch). In practice, the core of the product is pretty simple: it’s a kids’ phone on the wrist with GPS, and the rest is extra. The watch works with the Setracker2 app, which you install on your own phone (Android or iOS). From there you can see the location, manage contacts, set school mode, and control a few things remotely.

Setup is not overly complicated, but you do need to follow the steps. You have to buy a nano SIM separately (we tried O2 and Vodafone; both worked), turn the watch off, insert the SIM, then restart and wait for the signal icon to appear. Once the network is live, you scan the QR code in the app to link the watch. It took me about 20–30 minutes including messing with APN settings once, so not plug‑and‑play but not a nightmare either. After that, calls and video calls worked straight away. Audio quality is decent: I can hear my kid clearly, and she hears me fine, as long as she’s not standing next to a busy road.

The location part is more hit and miss. The watch combines GPS, Wi‑Fi and LBS (mobile network) to estimate location. When my daughter is outdoors or walking to school, the location is usually close enough on the map (within 20–50 metres). Inside big buildings or in crowded areas, it can jump around or show older positions for a while. It’s fine to check if she’s at school, at home, or roughly in the right area, but it’s not reliable if you want exact live tracking like Google Maps on a proper smartphone.

The SOS feature is simple: hold the button for a few seconds and it starts calling up to three preset contacts in a loop until someone picks up, and pushes the location to the app. I tested it a few times and it works, but again, the accuracy of the location depends on the signal. For me, that’s still useful: if she panics, she presses one button and I get a call and a rough idea of where she is. It’s not perfect, but it’s better than nothing and better than her having no way to call us.