Bump Share Files: What It Is & How to Use It

Bump share files refers to the file-sharing feature in the Bump app, which lets you wirelessly transfer files between nearby Android and iOS devices. You open the app, select a file, and tap the bump gesture (or use the in-app button) to send it to another device running Bump. This article explains how the feature works, its limitations, and what replaced it.

Formula

The calculator above estimates the effective transfer speed and the time needed to send a file, based on the time you measured and the file size. The formulas are:

• Transfer speed (MB/s) = File size (MB) ÷ Time (seconds)
• ETA per 100 MB (seconds) = 100 ÷ Transfer speed (MB/s)

Where:

• File size is in megabytes (MB), not megabits (Mb).
• Time is the total seconds it took to send the file.
• Transfer speed is the average throughput, not the peak rate.

This is a simple average; real transfers are rarely constant, especially over Wi-Fi or cellular.

Worked Example

Using the default values: file size = 50 MB, time = 10 seconds.

1. Transfer speed = 50 ÷ 10 = 5 MB/s.
2. ETA per 100 MB = 100 ÷ 5 = 20 seconds.

So the calculator shows 5.00 MB/s and 20 seconds per 100 MB. That matches the block output.

Background: What Was Bump?

Bump was a mobile app launched in 2009 that let users share contact information, photos, and files by physically bumping two phones together. The app used the accelerometer to detect the bump and then matched the two devices via the internet (using location and timestamp) to establish a connection. It became popular for exchanging business cards and photos, and it was acquired by Google in 2013. The Bump app was shut down on January 31, 2014, and its team moved to work on Google Photos. So when people ask “Bump share files?� they usually mean the old Bump app or a similar bump-to-transfer feature that still exists in some apps.

How Bump Share Files Worked

When you bumped two phones, the app recorded the exact time and the GPS location of each device. It sent that data to Bump’s servers, which matched the two events. Once matched, the servers facilitated the file transfer over the internet—not over a direct peer-to-peer connection. This meant both devices needed an active internet connection (Wi-Fi or cellular). The actual file transfer happened through Bump’s servers, so the speed depended on your upload and download speeds, not on a local connection.

• Open Bump on both devices.
• Select the file (photo, contact, etc.) on the sending device.
• Hold the phones close and bump them together (or tap the bump button).
• The receiving device would show a prompt to accept the file.
• Once accepted, the file downloaded over the internet.

That was the entire process. It was simple, but it required both devices to be online and the bump gesture to be recognized.

Why Bump Was Shut Down

Google acquired Bump in 2013, and in January 2014, Google announced it was shutting down the app. The stated reason was to focus on the team’s work on Google Photos, which later introduced its own sharing features. Users were given a short window to export their data. After the shutdown, the bump gesture disappeared from mainstream file sharing, but similar functionality appeared in other apps and operating systems.

Modern Alternatives to Bump Sharing

Today, there are several ways to share files between nearby phones without a cable:

• AirDrop (Apple): Uses Bluetooth and Wi-Fi to create a peer-to-peer connection between iPhones, iPads, and Macs. It works offline and is fast.
• Nearby Share (Android): Google’s equivalent of AirDrop, now called “Quick Shareâ€� after a merger with Samsung. It uses Bluetooth and Wi-Fi Direct.
• ShareIt / Xender: Third-party apps that use Wi-Fi Direct to transfer files at high speeds without internet.
• Snapdrop.net: A web-based tool that uses WebRTC to transfer files between devices on the same network.
• Email or cloud storage: For non-urgent files, email, Google Drive, Dropbox, or WeTransfer are simple options.

None of these require a physical bump, but they all achieve the same goal: getting a file from one device to another.

How to Choose a File Transfer Method

Choosing the right method depends on your situation:

• Both devices are Apple: Use AirDrop. It’s built-in, fast, and works offline.
• Both devices are Android: Use Quick Share (formerly Nearby Share). It’s built-in on most Android phones.
• Mixed devices (Android + iPhone): Use a third-party app like ShareIt, or a web-based service like Snapdrop, or simply email the file.
• Large files (over 100 MB): Use a Wi-Fi Direct app or a cloud service with a large file limit (e.g., WeTransfer free allows up to 2 GB).
• No internet connection: AirDrop and Quick Share work offline; most other methods need internet.

Common Problems and Fixes

When using modern file transfer tools, users often run into these issues:

• Devices don’t find each other: Make sure Bluetooth and Wi-Fi are on, and both devices are within range (usually 10 meters). For AirDrop, set it to “Everyoneâ€� temporarily.
• Transfer is slow: Check if you have a weak Wi-Fi signal or if the file is very large. For AirDrop, move closer to the other device.
• Transfer fails mid-way: Restart both devices and try again. If using a third-party app, clear its cache.
• File is corrupted after transfer: This is rare but can happen. Try a different method, or compress the file into a ZIP before sending.

Safety and Privacy Considerations

When sharing files, always be aware of what you’re sending and to whom. AirDrop and Quick Share allow you to receive files from “Contacts Only� or “Everyone� – set it to “Contacts Only� when you’re not actively sharing. Third-party apps may upload your files to their servers, so read the privacy policy. Never accept files from strangers, as they could contain malware. For sensitive documents, use an encrypted method like a password-protected ZIP or a secure cloud service.

Frequently Asked Questions

Can I still use Bump to share files?
No. The Bump app was shut down in 2014 and is no longer available for download. The servers are offline, so even if you have the APK, it won’t work.

Is there a way to “bump� files on modern phones?
Yes, some apps like “Bump for Android� (a different app) or “Bump It� exist, but they are not official. The closest built-in feature is AirDrop on iOS and Quick Share on Android, which don’t require a physical bump.

Does AirDrop work between iPhone and Android?
No. AirDrop is exclusive to Apple devices. For cross-platform sharing, use Quick Share (Android) with a Windows PC, or a third-party app like ShareIt.

What is the maximum file size I can share via AirDrop?
There is no official limit, but very large files (several GB) may take a long time and could fail if the connection drops. For files over 5 GB, consider a cloud service.

Is it safe to use third-party file transfer apps?
Generally yes, but stick to well-known apps with good reviews. Avoid apps that request unnecessary permissions (e.g., access to your contacts or SMS). Always check the app’s privacy policy.

Related

• Docker Compose Explained: Services, Volumes, Networks
• Fix TWRP Unable to Mount Storage 0MB
• Sea Ice vs Glaciers: Which Melting Raises Sea Level?

in t | Time to send | sec | 10 | 0 | 3600
in s | File size | MB | 50 | 0 | 10000
out rate | Transfer speed | MB/s | s / t | 2
out eta | ETA per 100 MB | sec | 100 / (s / t) | 0