Free Phone Diagnostics in San Leandro, No Pressure
Not sure what is wrong with your phone? Our diagnosis is always free. We tell you what is wrong, what it costs to fix, and whether it is worth repairing, with no pressure.
- ✓Most repairs done the same day, many in about an hour
- ✓Free diagnosis and an upfront flat price first
- ✓OEM and genuine-grade parts with a 30-day warranty
- ✓4.9 stars and 350+ reviews from East Bay customers
Free Phone Diagnostics today
4.9★ on Google · 350+ five-star reviews
When to come in for a diagnosis
A free diagnosis is the right first step whenever you are unsure. Bring it in if any of these apply.
- ✓Not sure what is actually wrong
- ✓More than one issue at once
- ✓Quoted a high price somewhere else
- ✓Phone acting up after another repair
- ✓Want to know if it is worth fixing
What does a phone diagnosis include, and is it really free?
Yes, the diagnosis at Cellular City Phone Repair in San Leandro is genuinely free, with no obligation to book the repair. When you bring a phone in, we test it against the actual symptoms, run a board-level scan when it is needed, and identify the real problem, whether it is a battery, a charging port, a screen, water damage, or something on the logic board. You leave with a clear answer and a flat, upfront price, so there is no diagnostic fee tacked on later and no guesswork. Most diagnoses are done the same day, often while you wait. We do it this way because an honest diagnosis builds trust: if a repair is not worth the money, or the phone is beyond a reasonable fix, we say so plainly instead of selling you a repair you do not need. If you go ahead, the work is backed by a 30-day warranty.
Updated July 2026
How it works
Three simple steps, usually the same day.
Call, book, or walk in
Tell us your device and the problem, or just drop by our San Leandro shop.
Free diagnosis & flat quote
We confirm the fix and give you the exact price before any work begins.
Fixed & guaranteed
Most repairs are ready the same day, backed by a 30-day warranty.
Our diagnosis is always free. We tell you what is wrong, what it costs to fix, and whether it is worth repairing, so you can make the call.
We fix a free diagnosis on every major brand
iPhone, Samsung Galaxy, Google Pixel, iPad, OnePlus, and most other phones and tablets.
How we find the real problem, down to the board
A Cellular City diagnosis is a real hardware check, not a guess. When a phone will not turn on, will not charge, or keeps crashing, we use a board-level diagnostic tool that reads the logic board and points to the exact component that is failing. You get a straight answer and a flat quote before any work starts, instead of paying for one part after another to see what sticks. Most diagnoses are done the same day, and the diagnosis itself is free.
"There is a machine you plug the board into, and it runs a diagnostic and tells you which part on the motherboard is failing. That is how we know what is actually wrong before we quote you a price."
James, owner of Cellular City Phone Repair
What East Bay customers say
Real reviews from neighbors across San Leandro and the East Bay.
"James was very helpful and knowledgeable about what had happened to my S10e and was considerate enough to take a look at it for free. Had to wait a little bit, but I appreciated the help."
"I came in early around 9:30 AM to get my broken camera repaired, and I was out by 10:20 AM, less than an hour!"
"I really appreciate James for his kind and awesome customer service, and overall a really nice guy!"
Need a free diagnosis fixed in San Leandro today?
Call or text and most repairs are done before you need your phone back.
Free Phone Diagnostics questions
Straight answers from our San Leandro bench.
Is the diagnosis really free?
Yes, always. We check the phone and tell you what is wrong and what it costs, with no obligation to have us do the repair.
How long does a diagnosis take?
Most diagnoses are quick, often while you wait, so you leave knowing exactly what is going on.
What if my phone is not worth fixing?
We will tell you honestly. We would rather give you a straight answer than sell you a repair that does not make sense.
Do I need an appointment?
No. Walk-ins are welcome at our San Leandro shop, though you are also welcome to book or call ahead.
More repairs we offer
Explore other services and service areas.
From our blog
Helpful reads from our San Leandro repair bench.
Get your a free diagnosis fixed today
Walk in, call, or book online. Free diagnosis, upfront pricing, and a 30-day warranty on every repair.
Cellular City Phone Repair · 2171 Doolittle Drive, San Leandro, CA 94577 · (510) 706-7092 · Mon-Wed 10-6, Thu 10-4, Fri 10-6, Sat 10-4