iPhone/Android Accessory Design Enhancement

in 3D Modeling Design held by MAS
Contest Ended, Winner(s) have been selected.
This consumer product is an accessory that provides enhanced usability to mobile phones and tablets.

The latest design of our "Band" is two parts:
1. Round Base that attaches to the back of the phone (made from a low-friction polymer like polyethylene)

2. A "band" that overlaps with the Round Base (1) and rotates/spins around it. (made from polyethylene over-molded with rubber to provide elasticity to the top band part)

The rubber part of the band elongates so that an individual's finger can be placed underneath the band and above the base. The elasticity part is important so it can accommodate different finger sizes.

The product allows users to hold the phone more securely.

Our current challenge is the design of the "Band" (2). This is where we need the help.

As shown in the attached STL file for the Band, there are two circles on either side of the flap that holds the finger down. These circle were put there to provide some added elasticity to the rubber piece.

While it does functionally work well, the current design does not look durable or very elegant.

We'd like to rethink the band design to make it look incredibly user-friendly, allowing the band to stretch upright to accommodate different finger sizes, while being functionally superior to the current design.

Designer will need to provide STL files for my prototyping company to be able to work with.
Looking for:
1. the most aesthetically pleasing design
2. One that considers usability (user sliding in their finger and feeling secure)
3. Understand the implications of tooling design -- we don't want to have to make an injection molding tool that is massively expensive due to a complicated design.
Ask for Sample:
Would like sample designs to determine winner.
  1. Any


1st Winner
#30 Cekelan Gadget by Ridwan Septyawan
"Cekelan Gadget"
I wish you like it and meet with your criteria.
Best Regards,
Ridwan S
2016-06-18 16:54:13
#12 Iphone Accessory by Indrawan
I made some improvements from my last design. With this design, you can use your current prototype/design for the rigid part and for the inside base. The only part that change is for the flexible part on the outer band.
2016-05-27 08:05:47
#13 Iphone Accessory by Indrawan
This my second improvement. Please see the .jpg files for some explanation. Thank you :)
2016-05-27 17:59:24
#28 Gadget Secure Holder by Ridwan Septyawan
"Gadget Secure Holder"
Best Regards,
Ridwan S
2016-06-16 20:52:06
#29 BAND by nuzzar
Here is my design. I hope you like it.
Best regards,
2016-06-18 03:50:09
#31 BAND by nuzzar
Here is the revised version. I hope this meet all your criteria.
Best regards,
2016-06-18 22:58:42
#1 iPhone/Android Accessory ReDesign by Fabio Carneiro
I just make a redesign to a round style and I´ve included a region to add a logo.
2016-05-22 21:01:46
#3 iPhone/Android Accessory Design by Fabio Carneiro
New design for iPhone/Android Accessory
2016-05-24 01:27:18
#5 iPhone/Android Accessory Design by Fabio Carneiro
Final Files
2016-05-24 14:43:57
#8 Iphone Accessory by Indrawan
2016-05-26 07:16:07
#10 Smartphone Accessory Design by Miguel Noble
Tried to do a more robust version which would feel safer on the finger. This one has a more geometric look which I think it's modern and minimalist.
2016-05-26 16:23:48
#11 Smarthphone Accessory variation by Miguel Noble
This would be a variation of the previous option with a larger rubber band.
2016-05-26 19:24:15
#15 accessory by elmasry
please give your feedback and tell me if you dont like something in the design
2016-05-29 15:14:30
#20 iPHONE ACCESSORY by 25@rt
2016-05-30 14:24:44
#23 Finger Gap for Phone - 1st Version by Andika Jamaluddin
There are Two parts of design as you need and requested... Thanks
2016-06-02 08:22:56
#24 Phone Accessory by Mahbub
2016-06-07 12:56:28
#4 Rubber Mobile holder by Ravi Sagar
i have attached some kind of hook you see in the image. The hook will hold tight the upper rubber band. the main reason is you can change the band color as per your style. or you can remove the rubber band.
2016-05-24 06:36:50
#6 Iphone Holder rev A by Miguel Noble
I tried to do an ergonomic design, which is comfortable for the finger. By adding a nice curve on the base and more holes to the rubber part, the product will be adaptable and comfortable to any hand.
2016-05-24 19:31:34
#7 Iphone Accessory by Miguel Noble
On this picture, I wanted to show the curves at each end of the rubber. Thank you
2016-05-24 19:40:17
#9 Mobile Holder Band by Ravi Sagar
Changes as per descriptions.
2016-05-26 07:33:25
#17 mobile accessory by elmasry
i made it more low profile ,hope you find it pleasing ..please give me your feedback and ll your comments are welcomed ,,thanks
2016-05-30 09:11:01
#18 iPHONE ACCESSORY by 25@rt
2016-05-30 13:36:10
#19 iPHONE ACCESSORY by 25@rt
2016-05-30 14:17:16
#21 iPHONE ACCESSORY by 25@rt
2016-05-30 17:59:56
#22 Phone Accessory by Yusuf Aryasa
Mobile Phone Accessory
2016-05-31 11:36:54
#25 iPhone accessory by elmasry
2016-06-08 15:07:34
#26 phone ACCESSORY by Vladimir Nikolic
2016-06-12 11:58:59
#27 Finger Gap for Phone - 2nd Version by Andika Jamaluddin
This is 2nd version of my design, i was redrawing and following past issued for 1st version.
please give us feedback if there are those who do not matching the criteria.
Warm Regards !
2016-06-14 05:48:17


Ridwan Septyawan


Wed, 22 Jun 2016 07:47:11 +0000

Thanks for your appreciations and choosing my design and first winner. And congratulations for all winner and all entries.

Best Regards,
Ridwan S



Tue, 21 Jun 2016 23:22:38 +0000
Hello Everyone, thank you so much for participating in our contest!

It was a difficult decision, with all the great entries, but we selected two winners that we felt best matched our criteria.

Thank you once again for taking the time to join in our contest.



Tue, 31 May 2016 18:51:57 +0000
Hi PJCAD, i will message you too, but at this time, i dont have other formats available right now. Only STL. Hope you can find a way to open them!
Tue, 31 May 2016 14:46:03 +0000
Dear MAS,

I would like to take part in your contest, I just have some problems with opening your STL files. Could you please upload parts to the attachment in other formats than STL?

Thank you in advance,




Fri, 27 May 2016 23:56:56 +0000
I have just uploaded the "base" STL. I did not realize that I had not included that in the original STL files.

Here are the parts explained:

## Band ##
HEB v2 rigid - The rigid part of the "Band"
HEB v2 - The soft/flexible part of the "Band" (The rigid part is over-molded with rubber to make this stretchy component of the "band")

## Base ##
Base X4 - The part that attaches to the phone. This part is inserted into the "band" through the side opening.



Thu, 26 May 2016 13:48:21 +0000
Thanks for your entries!

For ratings:
2 means good design, but not likely feasible
3 means better design, and possibly feasible
4 means better design, and very feasible
5 means great design, and feasible

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