John O'Rangers
Screen Repair on iPhone 13 Pro/Pro Max and Newer: What You Need to Know
Notes on screen repair for iPhone 13 Pro/Pro Max and newer. These devices are a bit of an issue when it comes to proper display repair...
top of page
5716 Industry Lane, Suite E
Frederick, MD 21704
Search
John O'Rangers
- Sep 7
- 3 min
iPhone Battery Monitoring System (BMS) Repair: Longterm Performance Report
One of the bigger issues with iPhone repair in recent years has been partial serialization of components. Simply put, Apple chooses to...
13 views0 comments
John O'Rangers
- Aug 17
- 3 min
Why Is It So Hard to Downgrade iOS to an Earlier Version?
Periodically I get requests from customers to downgrade their iPhones and iPads to an earlier version of iOS. Unfortunately this process...
19 views0 comments
John O'Rangers
- Mar 11
- 1 min
Updated Status and Thank You
I wanted to take a moment to express my heartfelt thanks to everyone for their patience, love, and support over the last 6 months. My...
53 views0 comments
John O'Rangers
- Oct 14, 2022
- 3 min
Shop Temporarily Closed: Healthcare Emergency
I regretfully must inform everyone that effective immediately CDC Cellular is closed until further notice. Please note that it will be...
42 views0 comments
John O'Rangers
- Aug 22, 2022
- 5 min
iPhone 12/13 Series True Tone Transfer
Ever since the iPhone 12 came along, and continuing with the 13 series, the True Tone setting has been controversial. Screen replacement...
47 views0 comments
John O'Rangers
- Jun 13, 2022
- 9 min
My "Virtual" Commencement Address: Congratulations Graduates, But Beware!
Good Afternoon everybody. I wanted to take some time and try to do some community service. Part of being a businessman is serving people...
29 views0 comments
John O'Rangers
- Apr 13, 2022
- 6 min
Conservative Politics, Big Tech, And The Media: What Is The Problem?
Been thinking, analyzing, and reviewing history on this topic and I have some ideas as to what the root of the problem is. I also have...
29 views0 comments
John O'Rangers
- Apr 3, 2022
- 7 min
Buying And Selling Used Phones: The Pitfalls
I get asked all the time if I sell used phones. The answer is "I wish but do not at the present time". Why is this the case? Read on and...
53 views0 comments
John O'Rangers
- Mar 29, 2022
- 1 min
Turning A Moronic Moment Into A Success
Pretty good one right here. Did a screen job on a Motorola Ace 5G. That’s a new model. Motos are often pains in the butts to deal with....
8 views0 comments
John O'Rangers
- Mar 19, 2022
- 7 min
What Repairing A Device Is Really Like
Phones, tablets, computers, right up to farm equipment are all notable examples of products that can and will break down eventually. The...
20 views0 comments
John O'Rangers
- Dec 23, 2021
- 5 min
Covid-19 And Omicron: The Layperson's Guide
I wanted to take a moment to break away from the technology to talk about technology of the Covid-19 kind. This humble blog post I hope...
444 views0 comments
John O'Rangers
- Dec 16, 2021
- 8 min
Car Stereos: The Layperson's Guide To Good Sound
Felt like talking about something near and dear to my heart, stereo systems. I’d like to focus on car systems and give you my take on...
21 views0 comments
John O'Rangers
- Nov 18, 2021
- 5 min
Apple To Open Up "Self Service Repair" In 2022
I admit to being a day late and a dollar short on the much ballyhooed announcement from Apple on November 17, 2021 of a new "Self Service...
26 views0 comments
John O'Rangers
- Oct 11, 2021
- 1 min
News and Notes: Price Increases Coming And Shortages
Not the best news, but it's probably better to communicate with everyone early so there are no surprises. I received word this morning...
38 views0 comments
John O'Rangers
- Sep 29, 2021
- 6 min
iPhone 13: Early Repair Analysis And Face ID
As we all know, the new iPhone 13 has debuted to varying perspectives. Some have been critical of the design for its similarities to the...
32 views0 comments
John O'Rangers
- Aug 30, 2021
- 4 min
PC Power Supplies: My Philosophy And Recommendations
Well I got a dose of the stupids and replaced the main office PC’s power supply with this Seasonic unit. But hear me out before yelling...
32 views0 comments
John O'Rangers
- Aug 28, 2021
- 3 min
Windows 11 Is Coming! What You Should Know
Just a brief note on MS Windows. Not sure if you've already heard, but Windows 10 is being replaced with the all-new Windows 11. It is,...
23 views0 comments
John O'Rangers
- Aug 9, 2021
- 6 min
PPP And SBA EIDL Loans: CDC Cellular's Status And Opinion On These Instruments
With the COVID-19 crisis ongoing, one of the more devastating aspects of the virus was the effect it had on certain classes of business....
22 views0 comments
Eleanor A. O'Rangers, Pharm D
- Jun 2, 2021
- 2 min
Do you have a pacemaker or internal cardiac defibrillator?
That new iPhone 12 you just purchased can interfere with proper functioning of those devices In an analysis published in Journal of the...
31 views0 comments
bottom of page