Queues had formed outside the shops overnight as Apple's devotees vied to get their hands on the latest model of the fashionable phone - the futuristic 5S handset, which is equipped with a fingerprint scanner.
The device, which also comes in silver and "space" grey, is expected to fly off the shelves - but it is unclear whether the colourful 5C model will have the same reception.
The cheaper 5C comes in five hues - pink, blue, yellow, green, and white - and has been released at a time when Apple faces stiffer competition than ever before.
One man went over and above the call of duty to buy one of the phones when he queued for 10 hours to get one for his son who is currently working in China.
Richard Docherty, from Crookston, was at the head of a queue of more than 300 people waiting for the Apple store at the Braehead shopping mall to open at 8am yesterday.
Mr Docherty was buying the phone for his 20-year-old son Ryan, who doesn't get back to Scotland until next week.
He added: "Time went by pretty quick as I was chatting to people in the queue.
"A real benefit of coming to intu Braehead was that we were inside and away from the cold outside."