384kbps vs 128kbps: The Hidden FUP Detail That Saves Your Trip
When you buy an eSIM, you check the data limit: 1GB, 2GB, or 5GB. You rarely check what happens when that limit runs out.
That is the Fair Use Policy (FUP).
Most providers throttle you to 128kbps. On paper, it sounds like "unlimited data." In reality, 128kbps is barely enough to load a text message.
At MollySIM, we use 384kbps. It is exactly 3 times faster. It is the difference between a working map and a "Connection Timeout" error while you are standing on a busy street corner in Tokyo or Shanghai.

384kbps FUP keeps you moving. 128kbps keeps you waiting.
What is FUP and Why Does it Fail Travelers?
FUP means your data doesn't cut off; it just slows down.
The problem? Most "slowed down" speeds (128kbps) are designed for 2010's internet. Today's apps—Google Maps, Uber, Alipay, or even a basic hotel booking page—will often fail to load at that speed.
If your FUP speed is too low, your eSIM becomes a "emergency only" chip. You can't navigate, you can't pay for a coffee, and you can't translate a menu.
Their FUP vs Our FUP: The Math of Frustration
| FUP Speed | Actual Download Speed | Practical Use |
|---|---|---|
| Typical (128kbps) | ~16 KB/s | Text only. Maps will likely fail. |
| MollySIM (384kbps) | ~48 KB/s | 3x Faster. Reliable for Maps & Payments. |
We don't claim 384kbps is fast enough for TikTok or YouTube. No FUP speed is. But 384kbps is fast enough for essential travel tools.

The Real-World Difference
1. Maps & Navigation
- 128kbps: The "blue dot" moves, but the map stays white. You can't see the streets around you.
- 384kbps: The map tiles load. You can find your hotel. You can see the next turn.
2. Messaging & Photos
- 128kbps: Sending a photo of a restaurant menu? It might take 2 minutes and fail halfway.
- 384kbps: Photos send in seconds. Voice notes work without stuttering.
3. Payments & QR Codes
- 128kbps: Trying to pay at a register? The payment app spins and spins. People behind you get annoyed.
- 384kbps: The QR code generates. The transaction clears. You get on with your day.
4. Translation
- 128kbps: "Network error" when you need to ask for directions.
- 384kbps: Instant translation for voice and text.
Why Travelers Choose MollySIM
We don't just sell data; we sell connectivity that works until the end of your trip.
Most people focus on the headline data number. Smart travelers focus on the FUP speed. They know that at some point, they will hit that limit, and when they do, they want a phone that still works.
The MollySIM Advantage:
- 3x Faster FUP than typical plans.
- No disconnects.
- Reliable backup for navigation and payments.
Summary: Stay Connected with Confidence
Fair Use Policy is the "safety net" for your trip. A 128kbps net has holes in it. A 384kbps net holds.
Don't settle for "Emergency Only" data. Choose a plan that understands how you actually travel.