01 — Folded
Folded.
A phone.
Three hinges pull inward and the screen folds into a 6.9-inch phone that fits in a coat pocket. Aluminum frame, 420 g.
Introducing banaOS 4FTV — a folding phone
banaOS 4FTV
A phone. Three folds. An 85-inch screen.
24-month financing · Free setup · 30-day returns
banaOS 4
banaOS 4
banaOS 4
Tri-fold18 mm folded85 inches open
Tri-Fold
It’s a phone.
It unfolds into 85 inches.
Three seamless panes. Two hinges you can’t see. Folded, it’s a 6.9-inch phone. Open, it’s an 85-inch screen. Yes — it’s a phone.
FTV stands for Foldable Telephone. “Very Large” is also true.
0mm
Crease depth
0folds
Seamless fold
0bends
Fold life
Folded.
Open 0%
banaOS 4
banaOS 4
banaOS 4
Engineering
A crease
you can’t feel.
The panes aren’t pressed together. They float. Sixth-gen ultra-thin glass leaves 0.02 mm of give at the fold, and the optical adhesive redistributes stress every time it closes. You see the light. You don’t see the seam.
Ultra-thin glass0.03 mm
9H hardness · 1.5 mm bend radius
Optical adhesive0.01 mm
Redistributes stress on every fold
Flexible substrate0.12 mm
Pixel layer · 300,000 folds
Liquid-metal hinge3rd gen
Silent · opens in 1.4 s
Aluminum frame420 g
Total weight · 4.8 mm unfolded
0.02mmCrease depth
300,000foldsFold life
1.4sFull open
4.8mmUnfolded
Three States
Fold it.
Put it anywhere.
One screen, three stances: in a pocket, on a desk, anywhere. Not modes — physics.
Folded.
In your pocket.
18 mm. 420 g. A 6.9-inch phone. From the classroom to the dorm, one hand is enough.
Half open.
It stands.
Two hinges hold 70°. The screen stands on the desk by itself. Meetings, recipes, workouts — no stand required.
Open.
85 inches.
Three folds, one 6K screen. A window by day, a theater by night. Fold it back into a phone.
FOR YOU
One screen.
Three kinds of people.
Teachers, adults, students. One phone; three very different days — and a screen big enough for all of them.
01
TEACHERS
An 85-inch
classroom.
Lesson decks, lab demos, film class. Fold it back into a phone and put it in your pocket.
02
ADULTS
A phone by day.
85 inches by night.
The commute, the overtime, the one-bedroom. It fits the desk. It fits the pocket.
03
STUDENTS
It fits the dorm.
Student 10% off.
Dorm desk, club screenings, graduation show. Verify as a student and take 10% off.
See student pricingShop
Three sizes.
One piece of glass.
65-inch · tri-fold
banaOS 4FTV neo
65-inch unfolded · 6.5-inch folded · 4K
- Unfolded65"
- Folded16 mm
- Cover6.5"
- ChipB1
$1,700or 24 months at $70.83/mo
Buy
75-inch · tri-fold
banaOS 4FTV lite
75-inch unfolded · 6.7-inch folded · 4K
- Unfolded75"
- Folded17 mm
- Cover6.7"
- ChipB1 Pro
$2,040or 24 months at $85/mo
Buy
85-inch · tri-fold
banaOS 4FTV pro
85-inch unfolded · 6.9-inch folded · 6K
- Unfolded85"
- Folded18 mm
- Cover6.9"
- ChipB2 Max
$3,400or 24 months at $141.67/mo
Buy
Tech Specs
Which screen
is yours?
Swipe to compare all three →
| Model | 4FTV neo From $1,700 | 4FTV lite From $2,040 | 4FTV pro From $3,400 Recommended |
|---|---|---|---|
| Unfolded size | 65" | 75" | 85" |
| Folded thickness | 16 mm | 17 mm | 18 mm |
| Fold | Tri-fold | Tri-fold | Tri-fold · titanium |
| Resolution | 4K 120Hz | 4K 120Hz | 6K 144Hz |
| Peak brightness | 1,600 nits | 2,000 nits | 3,000 nits |
| Chip | B1 | B1 Pro | B2 Max |
| Hinge | 2nd gen | 2nd gen | 3rd gen · liquid metal |
| Unfold time | 1.6 s | 1.5 s | 1.4 s |
| Weight | 320 g | 360 g | 420 g |
| Cover screen | 6.5" | 6.7" | 6.9" |
| Colors | Midnight | Midnight · Dune Gold | Midnight · Aurora Silver |
Folded thickness includes the hinge. Unfold time is the average from folded to fully flat at 22°C. Folded size is measured by the cover screen. Real-world results vary with screen size and the weather that day.
ClimateWall · Patent family
Patents are
the grammar of climate.
ClimateWall isn’t out yet, but its grammar is finished. Four granted. 37 pending.
Certificate numbers, inventors, and grant dates are fictional. ClimateWall is a concept; Zootopia references belong to Disney. This project is not affiliated with Disney.
© 2025 Banananini Patent Office
85 inches.
Anywhere.
banaOS 4FTV, from $1,700. Order today. Unfold 85 inches from your pocket tomorrow.