On the day of the referendum, state controlled Guinea Broadband Guinéenne de Large Bande announced that it expected that internet and telephony services to be disturbed due to a planned maintenance work on undersea cables. Although the planned works were later postponed,[9] NetBlocks confirmed that social media was blocked from 20:00 on the evening before polling day until the morning of the day after, spanning 36 hours. The block included Twitter, Facebook, Instagram while WhatsApp servers were restricted.