Additional Support

If you have any questions or queries regarding any of our products, or want to get to know more about QDOS, please don't hesitate to get in touch by emailing


We use Shopify Payments to process payments using PayPal, Visa Credit, Visa Debit, Mastercard, Maestro, Apple Pay, Google Pay and Shop Pay at the webstore.
Yes, of course, we are happy to accept payments by Paypal at the webstore.
We accept payments in sterling only.

Order processing

Once payment has been accepted and your order confirmed, our speedy delivery process takes over so, unfortunately, it is usually impossible to cancel a confirmed order. If you do need to cancel an order, send an email to during normal business hours and we will try and stop the shipment.
If we were not able to prevent your order from shipping you will be able to return it, un-openend, for an exchange or refund but we will have to ask you to pay for the return postage. The exhange or refund will be processed once the returned goods have been received.

Warranty information

QDOS offers a one-year limited warranty on its products whose packaging bears our 1-year warranty icon when sold through and authorised retailers. We warrant our retail products to be free of defects in materials and workmanship that result in failure under normal usage for a period of one (1) year from the date of retail purchase by the original end-user purchaser (Warranty Period).

OptiGuard FAQs

Only once, unfortunately. Re-applying the glass screen protector could attract dust under the surface, resulting in bubbles forming. To make sure you apply it correctly, check out our installation video and follow the instructions inside the box.
Don't worry about this, if your OptiGuard is covered by our Lifetime Warranty program, QDOS will offer you a replacement. Visit our Lifetime Warranty page and follow the instructions to claim a replacement.
This is to make sure there's no dirt, dust or grime on the screen. If there is, it will cause air bubbles to form underneath the protector, which will affect visibility.
If you've cleaned your screen before application and a small bubble still appears, don't worry. You can remove these by applying gentle pressure from the bubble to the edge of the screen. If the bubble is still there, it should disappear after 24-48 hours. If you have any problems, don't hesitate to contact our customer service team at
The OptiGuard Glass Curve has been tempered for 4+ hours, giving it a top of the scales hardness rating of 9H! This being said, if it suffers from a nasty fall, it may break in order to protect the device underneath. However, most OptiGuard products come with a Lifetime Warranty, so should it break, visit our Lifetime Warranty page and follow the instructions to claim a replacement! (terms and conditions apply)