First of all: who names appliances like microwaves, ovens, washing machines and stuff? How difficult it is to then recommend or know which one to buy, and I say this with experience: less than a year ago I bought an apartment and had to set up the kitchen and its associated appliances. What a shame I didn’t know about the existence of this product segment, because the LG MJ3965BP is not just another microwave (like the one I have), it is a three-in-one: microwave, oven and airfryer. They say that he who covers a lot, takes little, so we have tested it thoroughly and this has been our experience.
✅ Buy it if…
- You have little space in the kitchen.
- The size of air fryers falls short.
- You are a fan of microwaves and you think they are underrated.
❌ Don’t buy it if…
- There are a lot of people at home.
- You already have an oven and (especially) a good air fryer.
- You want a simple and cheap microwave.
The essentials in 30 seconds
The LG MJ3965BP is an oven, microwave, grill and air fryer. I don’t want to entangle you with psychological technicalities about air fryers (you can go deeper here), I’ll just summarize it like this: They are mini convection ovens. and that’s just what we have here, a small oven that also has a microwave function. Come on, he can cook with waves and air and he does it with flying colors.
When I was little I remember the legendary microwaves with a grill function that you almost had to put in the burner to toast that gratin lasagna after waiting an eternity, but nothing could be further from the truth: this one goes like a shot and actually toasts food before the oven. As for the airfryer, it has fine print: you can put whatever you want, but limited to 300 grams. There it cooks like the best air fryers because it has power and by adding such a small amount, the cooking is uniform. I don’t know about you, but I usually put more in. If that happens, your best bet is to use the oven version.
For a microwave it is large, but for an oven it is small, which makes it precisely a solution for those homes where there is no oven, either because you don’t have space or because you are renting and your kitchen already came like this. In that case, here you have a three-in-one solvent for all types of preparations.
LG MJ3965BPS – Microwave Oven, 4 in 1, with Digital Display, 39 Liters and 1100 W, Smart Inverter and EasyClean Function, Cooks Faster, Maintains Flavor, Black
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Our experience with the LG MJ3965BP


A great design in every way. When I took it out of the box the first thing I said was blasphemy: it’s heavier than a regular microwave and it was difficult for me to take it out. And also find a place for it, because it doesn’t fit on the shelf where my resident microwave is. Finally, I found a space on the counter for this 39-liter capacity pot. The good thing is that it has a very striking and modern mirrored finish. To operate it, little story: a touch panel, a screen and a roulette wheel and everything you need to know is on a sheet of paper on the side of the door. Ideal for impatient people who don’t read instructions.
This little oven is very big. After the drama of finding a place for it, the joys come: the great handicap of air fryers in general is that there are things that you can’t fit into, but in this LG MJ3965BP, unless the whole family comes, there is plenty of space to fit a whole chicken. And in 50 minutes you have it this golden, a little less than the required hour in my oven. You just have to choose the “Roast and Bake” function and little else. That the plate rotates is a plus for uniform cooking and since there is interior light, you can keep an eye on it without having to open the door. In short, power is not a problem and that brings advantages: you save time in the oven, you use less energy and you fit more than in a deep fryer.


Excellent in microwave. It may be the least exciting, but it more than accomplishes the tasks of evenly heating those leftovers, defrosting bread, boiling water for an infusion… What has surprised me most here is that it minimizes the endemic evil of microwaves: you heat a plate of meatballs and while one is hot, the other is cold. The power and rotation help, but the way of heating food with waves is more homogeneous compared to most microwaves I have tried (which are the typical basic ones for 50 – 100 euros).
TOirfryer may be saying a lot. With some potato sticks in the next dish, my doubt was whether to bake them or put them in air fryer mode. I ventured to try the second option and there I was disappointed: it is limited to introducing 300 grams of food. With that amount or less you ensure that the food is spread out and cooked and toasted quickly, that is to say: the airfryer function in its most favorable conditions. But who makes only 300 grams of potatoes? I took a gamble by disobeying the instructions and tried it and here I found that it was much more difficult for them to achieve that golden brown.
Maintenance: leave a cloth nearby. The finish is a real magnet for grease marks (which, on the other hand, lend themselves to appearing on a device that is used for cooking), so it is better to have a cloth nearby. The good thing is that being completely flat and with hardly any nooks, it is cleaned just as easily and quickly both inside and out. In addition, both the turntable and the included tray can be put in the dishwasher.
LG MJ3965BP technical sheet
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LG MJ3965BP |
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|---|---|
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Dimensions |
544 x 327 x 525mm 39 liters |
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Features |
Microwave, grill, oven and air fryer |
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Consumption |
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Plate size |
245mm diameter |
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What comes in the box |
two grills, tray, manual |
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Others |
Child lock |
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Price |
LG MJ3965BP, Xataka’s opinion


I started this analysis skeptical because of its versatility, but in just a week It has become essential in my kitchenrelegating it to the oven and microwave. And not to the aifryer? It depends on the size: if I only want to make two chicken thighs, with my air fryer I save time. If what I want is to cook 10 wings, go to the LG without thinking.
The challenge of supplying three such popular appliances is not easy, but this microwave does it well and at the end of the day you use it a lot: it just as well heats your milk in the mornings as you defrost bread, prepares some fries or a pizza, because yes, there is room for the legendary pre-cooked ones that get you out of trouble. And be careful, it’s not that it does the trick: it’s that it cooks well and quickly. At least more than the oven. Considering that it uses less electricity, white and in the bottle. For those who use the microwave to heat their tupperware and little else (myself included), it is night and day: from being a marginally used appliance to being a protagonist.
Do I recommend it to you?
If for whatever reason (you don’t have space, you’re renting, etc.) you don’t have an oven, emphatically: yes. If in addition to an oven you need a microwave, don’t worry. If you don’t have an oven, microwave or air fryer: go for it. Of the three functions, the weakest is the air fryer, but who needs an air fryer when they have a miniature oven? As this review began: I wish I had known about this type of vitaminized microwave when I was setting up the house. Because in addition to convincing with the results, the bills come out when it comes to buying that triad of appliances.
Images | Xataka
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This device has been provided for testing by LG. You can consult how we do reviews on Xataka and our relations policy with companies.

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