Customers express satisfaction with the protection offered by the Theorem Series case for the Microsoft Surface Duo. However, many customers cite issues with the case fit and adhesive, finding the design awkward and the adhesive unreliable for long-term use. Concerns were also raised regarding the pen holder, with some users reporting it interferes with device functionality.
This summary was generated by AI based on customer reviews.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 2 Showing 21-40 of 44 reviews
Cons mentioned:
Adhesive
Rated 1 out of 5 stars
Buyer beware not with the money
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Poorly made received mine it looked like it was used already the packaging was torn the cover itself the side that has the adhesive dident stick to my phone to good not a good product from otter box very disappointed save the money and wait for a better product not worth the 70 dollars
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there,
We're so sorry about your recent experience with this Theorem Series case. This is strange because our cases usually come in pristine condition, ready for action. If you're willing to give this one more shot, we'd love to take things from the top with a brand-new warranty replacement which we trust will have no such issues going forward. Please feel free to contact us through our website under "How Can We Help You?" and select "General Questions."
Best, obcst
Cons mentioned:
Adhesive
Rated 4 out of 5 stars
Otterbox Theorem Series for Microsoft Surface Duo
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Posted . Owned for 3 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This was a great device, I use it all the time. It would be good if it came with bands instead of teh sticky stuff instead.
No, I would not recommend this to a friend
Pros mentioned:
Protection
Rated 5 out of 5 stars
Duo case
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This reviewer received promo considerations or sweepstakes entry for writing a review.
Great starter case for now. Does the job of protecting the phone. Fits about 4 cards
I would recommend this to a friend
Rated 1 out of 5 stars
Look ELSEWHERE for a Duo Case
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Returned! Started fraying less than a week after purchase. I trusted Otterbox because of their other phone cases so shelling out 70 dollars to protect my phone seemed like a no brainer. Not only did the edges start fraying, but it started peeling. I treated my Duo with EXPERT care and have no idea why it started fraying other than because of the poor quality. Sorry Otterbox, but this is a huge miss.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there!
We're sorry to hear about the troubles you had with your Theorem Series case! We greatly appreciate your feedback, and we'll be sure to let our engineers know about your experience. We're bummed that you ended up returning your case, and we hope you choose to give us another shot in the future. If you ever run into any other issues, please don't hesitate to reach out to our Customer Service Team here: https://www.otterbox.com/en-us/contact-us
Best, OtterBox Customer Service Team
Rated 1 out of 5 stars
Nice try but not it
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Not worth it. Surface pen had trouble going in or out of holder. Sticky residue like adhesive left on pen. Can not fold in to single screen use. Tried to make it work but had to return.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there!
We're sorry to hear about your disappointment with your Theorem Series case! We greatly appreciate your feedback, and we'll be sure to get it passed up the ladder to our design team. We're bummed to hear you chose to return your case, but we hope you choose to give OtterBox another shot in the future. If you run into any other issues with your case, please don't hesitate to reach out to our Customer Service Team here: https://www.otterbox.com/en-us/contact-us
Best, OtterBox Customer Service Team
Pros mentioned:
Protection
Rated 4 out of 5 stars
Good solid case.
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Well built, sturdy and solid. Provides solid protection for surface duo.
I would recommend this to a friend
Rated 4 out of 5 stars
Pen Holder Hampers Protection
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Posted . Owned for less than 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Purchased this case to house the Surface Duo and the Slim Stylus. I even attempted to use the Stylus from Surface Book 2, once again it does not fit snug and prevents proper closing. The Duo being so new and really no extensive reviews in the pipeline force me to review the item and the case myself. Bottom line it needs work.
No, I would not recommend this to a friend
Rated 2 out of 5 stars
Its ok...
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
As its the only one for this phone its better than nothing, but it makes it harder to use the phone overall.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi MCA2018,
We're so sorry about this. We'd love to learn more about your situation, so we can figure out the best way to help. Please feel free to ping us on our OtterBox website, and we'll dive in with the assist!
Best, obcst
Rated 2 out of 5 stars
Not the best
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Doesn’t protect from short drops. Used it for 3 days then switched to vinyl cover
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there!
We're sorry to hear that you're not totally confident with your Defender Series Pro! Rest assured, that case design has been through extensive design testing to ensure it will provide your phone with the drop protection OtterBox is known for. We appreciate your feedback, and we'll be sure to pass your thoughts up the ladder to our design team. If you run into any issues with your case, please don't hesitate to reach out to our Customer Service Team here:https://www.otterbox.com/en-us/contact-us
Best, OtterBox Customer Service Team
Pros mentioned:
Protection
Rated 5 out of 5 stars
case
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
the case protect to duo. the only negative is it doesn’t not hold it in place at all.
it has a place for the new slim own which is wonderful
I would recommend this to a friend
Rated 1 out of 5 stars
Otterbox Theorem Series for Surface Duo - a Dud.
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I usually like Otterbox products but this one is a dud. The Surface Duo is held in by a sticky strip inside the folder only. It doesn't seem secure at all.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi, Jeannie!
We're sorry to hear about the troubles you had with your Theorem Series case! We greatly appreciate your feedback, and we'll be sure to let our engineers know about your experience. We're bummed that you ended up returning your case, and we hope you choose to give us another shot in the future. If you ever run into any issues, please don't hesitate to reach out to our Customer Service Team at 1-855-688-7269, and we can get you helped out.
Best, OtterBox Customer Service Team
Pros mentioned:
Protection
Rated 5 out of 5 stars
Excellent product
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great case for the Surface Duo.. Highly recommended
I would recommend this to a friend
Rated 1 out of 5 stars
Don't do it..
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This reviewer received promo considerations or sweepstakes entry for writing a review.
Boooo! makes the device not be able to fold back properly. Looks like I'm talking on a sheet of paper sized phone or I have to use speaker phone.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there!
We're sorry to hear about your disappointment with your Theorem Series case! We appreciate your feedback about the fold feature of your device, and we'll let our engineers know about your experience. In the meantime, we have a great warranty, so we're more than happy to get you helped out. Please don't hesitate to reach out to us here: https://www.otterbox.com/en-us/contact-us
Best, OtterBox Customer Service Team
Rated 4 out of 5 stars
Microsoft surface duo protective case.
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This protector could have been designed better, but it does the job.
I would recommend this to a friend
Rated 1 out of 5 stars
Not Worth It
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Fits perfect but the adhesive made to stick to the phone is crappy and really doesnt secure your phone. Not worth $60.00
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi there!
We're sorry to hear about your disappointed with your Theorem Series case! We appreciate your feedback, and we'll be sure to get your thoughts passed up the ladder to our design team. In the meantime, please don't hesitate to reach out to our Customer Service Team through the link below, and we'd be more than happy to get you taken care of with a replacement case. Contact us: https://www.otterbox.com/en-us/contact-us
Best, OtterBox Customer Service Team
Rated 1 out of 5 stars
Junk
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This is a really bad design. Why would I want to stick anything to the back of my beautiful glass unit using adhesive.
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi Strawberry,
We're bummed to hear you're not exactly loving this Theorem Series case. We designed this case to maximize protection and functionality, but we understand that it's not for everyone. We're always trying to improve the Otter experience, so we'd love to pass your feedback up the ladder for future consideration. If you have any further questions or concerns, please feel free to contact us through our website under "How Can We Help You?" and select "General Questions."
Best, obcst
Rated 1 out of 5 stars
Can't fold!
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Can't fold fully to another way, so it very hard to folding camera to take a photo or video!
No, I would not recommend this to a friend
Brand response from OtterBox Customer Support
Posted .
Hi Jack,
We're so sorry this Theorem Series case isn't delivering the same seamless interaction you were hoping for. This is strange because we designed this case to maximize protection and functionality. We'd like to learn more about your situation, so we can figure out the best way to help. Please feel free to reach out to us on our Contact Us page on our OtterBox website, and we'll dive in with the assist. If needed, we can easily set up a warranty!
Best, obcst
Rated 5 out of 5 stars
OtterBox - Theorem Series for Microsoft Surface Du
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Protects my Surface Duo perfectly. Surface Pen holder was a little tight at first (probably a good thing), but holds it perfectly now. A bit pricey, but they are the only one who makes one.
I would recommend this to a friend
Rated 5 out of 5 stars
Duo cover
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Posted . Owned for 10 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Bought new surface duo, needed a cover and this cover was recommend by the salesman. Excellent Choice
I would recommend this to a friend
Rated 5 out of 5 stars
I like that it is a tight fit
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Now, that being said, I wish the pen holder was slightly bigger so that I could include it and still shut the case securely