Update: OnePlus India reached out to us, stating that the SMS that was sent out to customers was worded the way it was because of the character limit on the platform: "In terms of the SMS communication, due to character limitation with the platform, it could only carry a part of the overall message."

The company's newsletter has the full text, clearly stating that the OnePlus 5 is the highest-grossing phone during the launch week on Amazon:

Hi OnePlus Fan, Thank you for making OnePlus 5 the highest grossing smartphone in launch week on Amazon.in. We could not have done it without the overwhelming support from OnePlus community. As a token of appreciation, we are pleased to inform that the introductory cashback offer of Rs 1,500 on SBI Credit and Debit cards has been extended till 2nd July. Never Settle

Original story follows:

The OnePlus 5 went on sale in India and other global markets earlier this week, and the brand promptly announced two days after sales kicked off that the device was the highest-grossing phone on Amazon India during a launch week.

As a result, Amazon announced that it was extending its SBI cashback offer — which sees SBI credit and debit card holders receiving a ₹1,500 cashback on the phone — until July 2. OnePlus is now touting the extension of the cashback offer via a text message that's going to everyone who registered an interest in its latest phone, which according to Amazon is over 1 million people. Conveniently, the company removed the "at launch" reference from the message, making it seem like the OnePlus 5 is the highest-grossing phone ever.