Does Fone4u offer a warranty on second-hand smartphones?

Yes, we offer a 12-month warranty on all second-hand mobiles, such as hardware and functionality issues not resulting from accidental damage.

Can I trade-in my old mobile phone with Fone4u?

Yes! Sell your mobile stress-free with Fone4u. Get a quote instantly on our Sell Your Phone page, and hand in or post your device for rapid payment.

Does Fone4u repair phones and tablets?

Yes, we have expert repairs for iPhones, Samsung, iPads, and more, including screen repair, battery issues, and diagnostic work.

We are located at Tolan Street, Ballina, Co. Mayo, F26 XT02, Ireland. You can also visit us at the Sligo Co. Sligo store or the Bray Co. Wicklow store for purchases, repairs, and trading in your devices.

How long is delivery when I shop online?

We provide next-day delivery throughout Ireland on orders received up to 1 PM. Delivery is usually 1-2 working days from your location.

Which payment options does Fone4u provide?

We provide all major credit and debit cards, PayPal, American Express, and in-store payments.

Are the second-hand phones unlocked?

Yes, all our second-hand phones are completely unlocked and ready for use with any Irish or foreign network.

What if I change my mind after I've bought?

We operate a 14-day money-back guarantee on online purchases. If you do change your mind, simply return the phone in its original condition for a refund or exchange.

Aaliya Yousaf
26 Sep, 2025

Battery Health Checks for iPhone: Why It Is Important and How to Do It

Is your iPhone draining fast, losing percentages suddenly, or shutting down randomly? Your iPhone's battery health may be the reason.

Here's what you need to know

Why Battery Health Checks for Your iPhone Are Essential

Your iPhone battery can retain 80% of its initial capacity at 500 complete charge cycles. Your battery's chemical aging over time determines its behavior, leading to:

Extreme battery drain
Unexpected shutdowns
Slow performance when in use
Longer charging time

Checking your iPhone's battery health regularly guarantees:

Optimal performance when you need it
Better resale or trade-in value
Smooth experience with the latest iOS updates
Preventing accidental emergency shutdowns when you're out

How to Verify Your iPhone's Battery Health

You can test it yourself before bringing it to Fone4U:

Go to Settings > Battery > Battery Health & Charging.
Check Maximum Capacity (%) – this displays your battery's remaining capacity compared to when new.
Take a look at Peak Performance Capability – if it says "Your battery is currently supporting normal peak performance," your battery is fine.
Look for messages like "Service" or "Performance management applied," which indicate that you need to replace your battery.

When Do You Need a Battery Health Check?

Your iPhone battery capacity is less than 80%.
Your phone is restarting randomly, even though you have 20-30% of battery power left.
The battery drains faster than you think or it takes longer to charge.
You are looking to trade in or sell your iPhone and need the best value.
You are preparing your iPhone for a major iOS upgrade.

Professional iPhone Battery Health Tests in Dublin

While you can get an idea of your battery's general health, it will not tell the whole story, such as:

Hidden cycle count issues
Deep battery tests
Swelling or internal damage
Power problems at the board and charging port level

Through Fone4U.ie, our technicians perform professional battery health checks using quality equipment, providing you with a clear, honest report of your battery status.

iPhone Battery Replacement at Fone4U.ie

If your battery needs to be replaced, we have:

Same-day iPhone battery replacement in Dublin
High quality OEM-quality batteries guaranteed
Professional replacement by highly qualified technicians
No loss of data replacing the battery

Having your iPhone battery replaced can provide your phone with a new feel, provide it with some extra longevity, and be significantly less expensive than buying a new unit.

Advantages of Getting Your iPhone Battery Tested at Fone4U.ie

Fast, transparent diagnostics
No booking required – walk-ins welcome in Dublin
Transparent pricing – no hidden charges
Advice on whether or not it's worth replacing or upgrading your device
Trade-in options if you decide to upgrade instead

Are You Ready to Check the Battery Health of Your iPhone?

Don't wait until your iPhone fails you when you need it the most. Avail of a battery health check for your iPhone in Ireland today at Fone4U.ie and keep your phone running at its best.

Drop by our shop in Dublin today.
Contact us for a quick battery health check or replacement quote.
Prepare your iPhone for iOS 26 and everyday life with no battery anxiety.

Frequently Asked Questions

Yes. Fone4U offers both new and fully refurbished devices. Refurbished units undergo strict testing and grading so you know exactly what you’re buying.

Almost all phones, tablets, watches, and laptops come with a one-year warranty. This covers technical faults and gives you peace of mind after purchase.

Every device goes through a multi-point inspection process (checking battery, screen, camera, sensors, ports, and software) before it’s listed for sale.

Yes. Fone4U has a 14-day satisfaction guarantee—if the product isn’t right for you, you can return it within that period, following their return policy.

Absolutely. Whether it’s setting up your Samsung Galaxy S25 Ultra, transferring data, or troubleshooting, Fone4U’s customer support team is available to help you after your purchase.