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Message conent restrictions

Last Updated: Sep 22, 2021

To ensure effective message delivery, you should create message push tasks with reference to the message content limits for different push channels in the process of pushing messages.

Android push channel

Push channel Message title length limit Message body length limit
MPS self-built channel No limit No limit
Mi 50 characters 128 characters
Huawei 40 characters 1024 characters
OPPO 32 characters 200 characters
vivo 40 characters 100 characters
Note:
  • Pushes through vendor channels will fail if corresponding length limits are exceeded.
  • Pushes through vendor channels will fail if the message title or content is empty.
  • For the pushes through Android push channel (no matter vendor channels or MPS self-built channel), the size of the pushed message cannot exceed 2 KB.

iOS push channel

Push channel Message title length limit Message body length limit
APNs 40 characters, excess parts will be displayed as an ellipsis.
  • Up to 110 characters will be displayed in the Notification Center, and excess parts will be displayed as an ellipsis.
  • Up to 110 characters will be displayed when the phone screen is locked, and excess parts will be displayed as an ellipsis.
  • Up to 62 characters will be displayed in the top pop-up window, and excess parts will be displayed as an ellipsis.
Note: For the pushes through iOS push channel, the size of the pushed message cannot exceed 2 KB.