给家人发照片又不把流量用光
一张照片不重,一天一百张就是另一回事了。

快速解答
- Turn off automatic photo backup on mobile data and send in batches on Wi-Fi.
- Video costs many times more than stills, so handle it separately.

| Method | Upside | Watch-out |
|---|---|---|

| What changes the size | Which way it pushes | How much control you have |
|---|---|---|
- 1
- 2
- 3
- 4
- 5
优点
缺点

| Part of the day | What happens to the photos | Does it use mobile data? |
|---|---|---|

常见问题
Will sending photos home every day use a lot of data?+
A handful of stills a day through a chat app that compresses them is usually modest next to everything else you do on a trip. What moves the number is video and automatic backup, not the pictures you deliberately send, so deal with those two first.
Should I disable photo backup for the whole trip?+
Not as a set-and-forget choice, because the pictures then exist only on the handset and vanish with it. Better to set backup to Wi-Fi only and actually run it on every night where Wi-Fi is available.
Shared album or group chat: which is better?+
A shared album usually wins when there are many photographs: one upload reaches everyone and nothing has to be repeated across groups. Chat suits the few pictures you want seen immediately. The thing to check with an album is who can reach it.
Why did data drop on a day I barely touched the phone?+
Almost always background activity: photo backup, album sync, media downloading in a chat group, or app updates. Open the device's data usage screen to see which app is responsible, then restrict its background work.
Do I need to send originals to keep the quality?+
It depends what happens at the other end. For viewing on a phone the compressed copy is normally enough. For printing or editing, keep the originals and send them from home or over Wi-Fi that is fast enough to take them.
Who can I ask if something goes wrong during the trip?+
Reach the team on LINE at https://lin.ee/skDPoNx (@esimonline) or by email at esimonline.asia@gmail.com. Both cost very little data, so they still work when the allowance is nearly gone.
常见问题
Chat app or email: which uses less data?+
Most chat apps compress before sending, so they usually use less than emailing originals, at some cost in quality.
Why does data vanish when I sent nothing?+
Usually automatic backup or media downloading in chat groups. Open the phone's data usage screen to see which app is responsible.