Please note due to large volumes we are experiencing delays of 3-5 business days in processing. We apologise to any customers, and are making payments as quick as we can, we appreciate your patience.

Risk Free Service/Guarantee!

If you’re not happy with our evaluation - we will send your device back free of charge.

Sell Your Samsung Galaxy S21 with Mobile Monster

Sell Your iPhone

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Sell your old Samsung Galaxy S21 to Mobile Monster. We offer the highest prices & free postage. Get an instant valuation on our website here.

Sell your Samsung Galaxy S21 with Mobile Monster and join the sustainability revolution. We're committed to transforming tech recycling, reducing e-waste, and partnering with sustainable Aussie companies. Your device will find a new life, contributing to a greener world. Say goodbye to e-waste worries and sell your S21 with us today.

Are you moving on from your old iPhone? Did you know you can sell your Galaxy S21 to Mobile Monster and receive payment in as little as 3-5 business days?
Mobile Monster offers fair and transparent Galaxy S21 trade in deals regardless of your phone’s condition. Technology prices fall at alarming rates, so don’t wait. Trade in your unwanted Galaxy S21 today and lock in your price.
Galaxy S21 Ultra 5G
Galaxy S21 FE 5G
Galaxy S21 Plus 5G
Galaxy S21 5G

Trade in & sell your Galaxy S21

Selling your iPhone with Mobile Monster is a straightforward and hassle-free process. As one of the most popular and sought-after phones on the market today, there is always demand for these older model iPhones.
To sell your phone, select the Galaxy S21 from the “Sell your iPhone” menu, select your model and storage size, select your iPhone’s condition, review your information, and proceed to checkout. You will also need your device’s IMEI number which you can find by calling #06# on your iPhone.Either mail in your iPhone or drop it off in person for inspection. You’ll be paid once the inspection is complete.

What Galaxy S21 Models Can I Trade In?

We accept the standard Galaxy S21, Galaxy S21 Pro, Pro Max, and Plus in any colourway. Any storage capacity from 128GB to 1TB is also accepted.

How much trade in value do you get for an Galaxy S21

The value you get for your iPhone depends on a number of factors. The most important factor is the condition. Brand new or ‘as new’ Galaxy S21s will be worth more than phones with a considerable amount of wear and tear.
The model of the iPhone also determines the value. Standard Galaxy S21s cost less than Pro Max models and are less valuable to trade in. Storage also affects the trade in value.To see the current trade in value for your model and condition, select your model, storage size, and condition. The price reflected is an estimate until we receive and inspect your device.
If we determine the condition to be different from what you selected, we can either send your device back to you or offer you an updated trade in value for your device.We still offer the most competitive rates on the market. We will even match and surpass any competitor’s offer by 5%.

Do you have a location I can go to sell my Galaxy S21 in person?

If you prefer to sell or trade in your Galaxy S21 in person, we are located in the heart of the Melbourne CBD at Level 4/306 Little Collins Street, Melbourne VIC 3000.Please note that you will still need to complete a sell order online before coming in. Trading hours are 9:00 am – 5:00 pm, Monday through Friday. We do not keep cash on the premises and all sales will be made through either ETF or cheque.

What happens if my Galaxy S21 is broken?

Broken Galaxy S21s are what we consider dead condition. We do still accept non functioning devices for parts and recycling. We can offer you the fairest possible price for your dead device if you wish to trade it in.

Samsung

Quick Payment

Get paid within 3-5 business days

after device is received.

Best Prices Guaranteed

If a higher price is
offered by another store,

we’ll beat it by 5%.

Risk Free Service

send back your device
free of charge.

send back your device
free of charge.

Local Drop-off

You may drop off your
device at Melbourne CBD

Quick Payment

Get paid within 3-5 business days

after device is received.

Best Prices Guaranteed

If a higher price is
offered by another store,

we’ll beat it by 5%.

Risk Free Service

send back your device
free of charge.

send back your device
free of charge.

Local Drop-off

You may drop off your
device at Melbourne CBD

Trade in & sell your Samsung Galaxy s21

Looking to sell my S21? Our streamlined process makes it simple:

Step 1: Select your phone, condition, and quantity online.

Step 2: Fill in your details securely.
Step 3: Send us your phone and receive fast payment!

Prefer a face-to-face transaction? If you’re based in Melbourne we have an office based in the CBD where you can pop in to trade. 

What Samsung Galaxy s21 models can I trade in?

At Mobile Monster, we accept trade-ins for various Samsung Galaxy S21 models, including the S21, S21 Plus, and S21 Ultra 5G. Turn your old device into cash or credit toward an upgrade hassle-free. Sell my Samsung S21 series phone with confidence and join our mission to reduce e-waste!

How much trade in value do you get for a Samsung Galaxy s21?

At Mobile Monster, we understand that the trade-in value of your Samsung Galaxy S21 can vary based on its condition. So if you want to sell Galaxy S21 Ultra, then here’s what you need to know:

  • "As New" devices, showing no scratches or blemishes, fetch the highest value.
  • "Working" phones with minor wear and tear still hold value, though slightly less.
  • "Dead" devices, including those with water damage, receive the lowest valuation.

Rest assured, we offer competitive value across all conditions, ensuring you get the most out of your trade-in. Our commitment to customer satisfaction is evident through our comprehensive offerings:

  • Privacy: Your data is secure with us; we perform double factory resets for complete erasure.
  • Competitive Pricing: We aim to provide value that matches or exceeds our competitors.
  • Transparency: Stay informed with updates from receipt to payment.
  • Speedy Payment: Expect payment within 3-5 business days.
  • Free Shipping: We cover shipping costs, ensuring a hassle-free process.
  • Risk-Free: If conditions don't match, return your device free of charge.

Do you have a location I can go to sell my Samsung Galaxy s21 in person?

Of course! If you're in Melbourne, you can drop off your Samsung Galaxy S21 at our centrally located office in Melbourne CBD. We're happy to meet you in person. Please be aware that payments will be made via EFT or cheque, as we don't offer cash payments.

What happens if my Samsung Galaxy s21 is broken?

If your Samsung Galaxy S21 is damaged, Mobile Monster still values it. We assess its condition and offer compensation accordingly. We take pride in providing the highest payouts in the market. Moreover, we're equipped to repair broken devices, ensuring they're ready for a new owner and supporting our commitment to sustainable recycling practices.