Line can access the following on your device::

In-app purchases
Device & app history

• retrieve running apps

Identity

• find accounts on the device

Contacts

• read your contacts

Location

• approximate location (network-based)
• precise location (GPS and network-based)
• access extra location provider commands

SMS

• receive text messages (SMS)

Phone

• directly call phone numbers
• read call log

Photos/Media/Files

• read the contents of your USB storage
• modify or delete the contents of your USB storage

Camera

• take pictures and videos

Microphone

• record audio

Wi-Fi connection information

• view Wi-Fi connections

Device ID & call information

• read phone status and identity

Other

• receive data from Internet
• close other apps
• connect and disconnect from Wi-Fi
• view network connections
• install shortcuts
• control vibration
• pair with Bluetooth devices
• change your audio settings
• modify system settings
• full network access
• change network connectivity
• disable your screen lock
• send sticky broadcast
• prevent device from sleeping

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Last Update: 06/12/2015

Source:
https://play.google.com/store/apps/details?id=jp.naver.line.android