Reviewer calls iPhone Duo outer shell worst iPhone ever made
Techmeme reports that John Gruber’s Daring Fireball review praises the iPhone Duo’s inner tablet interface while heavily criticising its outer device design.

Key points
- John Gruber reviewed the iPhone Duo on Daring Fireball.
- The outer device was described as the worst iPhone ever made.
- The inner device was praised as a splendid tablet with superior UI.
John Gruber published a review of the iPhone Duo on Daring Fireball, which Techmeme highlighted. The assessment splits the device into two distinct experiences. Gruber argued that the outer hardware represents the worst iPhone Apple has ever manufactured. Conversely, he described the inner device as a splendid tablet with a user interface that outperforms the iPad’s current offering.
Root cause
The review notes that the very nature of the iPhone Duo raises numerous obvious questions about what it is like to use. Gruber specifically asks whether the device does not feel thick and heavy. He also questions whether it is awkward both to pocket and unpocket. These are presented as inquiries rather than confirmed observations.
Attack path
There is no security vulnerability or attack path described in this material. The source material focuses entirely on hardware ergonomics and software interface comparisons. No exploits, CVEs or threat actors are mentioned in the review or the Techmeme summary.
Affected versions
The review applies to the iPhone Duo model specifically. No specific software versions, firmware releases or hardware revision numbers are cited in the source text. The critique targets the general design philosophy of the device rather than a specific software build.
Mitigation
- No mitigation steps are required as this is a hardware review.
- Users should assess whether the physical weight suits their needs.
- Developers should note the UI praise for the inner tablet mode.
- No security patches are needed for the issues described.
What it means for organisations
Organisations deploying this device should evaluate ergonomic suitability for field staff. Teams usually assess whether heavy devices impact daily workflows or cause fatigue. Procurement managers need to confirm if the praised inner tablet UI meets specific application requirements. Internal communications should clarify that the criticism targets hardware design, not software security. Support teams should prepare for user feedback regarding pocketability and weight.
What to do and how to stay safe: iPhone Duo
- Verify if the physical dimensions fit standard carrying cases.
- Test the inner tablet interface with critical business applications.
- Monitor user feedback regarding comfort during extended use.
- Review vendor documentation for weight specifications and handling.
General security guidance from the TechSec Observer newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
Is the iPhone Duo secure?
The source material does not discuss security features or vulnerabilities. It focuses on hardware design and user interface comparisons.
Who reviewed the iPhone Duo?
John Gruber reviewed the device on his site Daring Fireball, as reported by Techmeme.
Is the UI better than iPad?
Gruber stated that the inner device’s UI bests the iPad’s current interface.



