ZenSim review

Our verdict: ZenSIM offers decent value if you want extra perks like referral discounts, data banking and international calls on your prepaid plan. It also stands out by offering travel eSIMs.

Chris Jager's headshot

By

Chris Jager

Edited by

Mariam Gabaji

Updated

Fact checked
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ZenSim: Our verdict

ZenSim is one of the newer telcos specialising in prepaid mobile plans and travel eSIMs.

Its prepaid plans start at $30 per month for 35GB of data and max out at $60 per month for 100GB. In terms of value, these prices sit somewhere in the middle of the pack; neither especially good nor bad.

It's worth noting that all ZenSim plans are eSIM only. If you're using an old phone or simply prefer using physical SIM cards, you're out of luck.

Pros

  • Option to bank unused data up to 500GB
  • Between 250 and 1,000 minutes of international calls to selected countries
  • Generous referral perks
  • Handy mobile app to manage your plan

Cons

  • No option for a physical SIM card
  • Customer service is online only

Compare ZenSim Mobile plans and prices

3 of 3 results
Checked 6 November 2026
Finder Score Provider Rating Data allowance Ongoing price Special offer
ZenSim logo
8.2
ZenSim Subscription $30
No lock-in contract
No special offer
8.2
No reviews
35GB
Vodafone 4G network
$30
per month
per month
$30
per month
per month
No special offer
View details
Compare product selection
ZenSim logo
8.2
ZenSim Subscription $40 5G
No lock-in contract
No special offer
8.2
No reviews
70GB
Vodafone 4G/5G network
$40
per month
per month
$40
per month
per month
No special offer
View details
Compare product selection
ZenSim logo
7.4
ZenSim Subscription $60 5G
No lock-in contract
No special offer
7.4
No reviews
100GB
Vodafone 4G/5G network
$60
per month
per month
$60
per month
per month
No special offer
View details
Compare product selection
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Showing 3 of 3 results

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ZenSim network coverage

ZenSim runs on Vodafone's 4G and 5G networks, although 5G is only available on higher-tier plans.

The Vodafone network recently received a significant expansion thanks to a network-sharing agreement with Optus. It now reaches approximately 98.5% of the Australian population.

You can expect to receive reliable coverage anywhere there are lots of people.

On ZenSim's standard plans, 4G and 5G speeds are both capped at 150Mbps. This isn't as fast as some rival prepaid plans, but should be perfectly adequate for all data-based activities, including streaming.

ZenSim travel eSIMs

ZenSim's travel eSIMs start at $17. There are individual options for over 200 destinations around the world.

You can also opt for a 30-day global eSIM that works in 119 countries. Prices start at $29 for 3GB, which is pretty standard for a global eSIM.

Note that this is a separate product from its prepaid mobile plans, not an add-on.

What features and perks does ZenSim offer?

ZenSim has a few interesting perks up its sleeve, including:

Squad Savings

For each new monthly customer you refer to ZenSim, the telco will credit you 100% of their first payment. For example, if they sign up to a $40 plan, your account will receive a $40 credit, for example.

To refer a friend, you simply send them the unique URL contained within the Squad Savings tab in the ZenSim app.

The referred customer, meanwhile, receives $5 off their monthly bill for their first 3 renewals. Your account also receives the same $5 credit. In other words, if they renew 3 times, you'll both receive $15 credit over 3 months.

There is no limit to how many friends you refer. If you have lots of friends (and don't mind spamming them with mobile plan deals), you could potentially get free mobile coverage for months on end.

Data banking

Wasted data is a real shame, so ZenSIM lets customers bank up to 500GB for future use.

This allowance is about average compared to other providers - some allow banking up to 1000GB or even offer unlimited data banking.

However, 500GB is fairly reasonable for the average user.

International calls

All plans include international call inclusions to the following 25 countries: Bangladesh, Canada, China, France, Greece, Hong Kong, India, Indonesia, Ireland, Italy, Japan, Malaysia, New Zealand, Pakistan, Philippines, Portugal, Republic of Korea, Singapore, Spain, Sri Lanka, Taiwan, Thailand, UK, USA and Vietnam.

The number of free minutes you receive depends on the plan, ranging from zero to 1000.

International roaming

If you want to use international roaming on your prepaid plan, ZenSim offers a 7-day travel add-on for $35.

It provides 2GB of data, 90 minutes of calls and 100 SMS in 31 countries.

How good is ZenSim's customer service?

As a recently launched startup, ZenSim is not currently listed in complaint records from the Australian Communications and Media Authority (ACMA) or the Telecommunications Industry Ombudsman (TIO).

There is, therefore, no formal benchmark available for assessing its customer service performance.

You can get in touch with ZenSim in the following ways:

  • Whatsapp
  • Facebook Messenger
  • Email via the website

ZenSim's customer service is online only. It promises to respond to all customer queries within 24 hours.

Still deciding on ZenSim Mobile?

Take our quick quiz to find a plan that fits your needs.

Frequently asked questions

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To make sure you get accurate and helpful information, this guide has been edited by Mariam Gabaji as part of our fact-checking process.
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Written by

Lead Shopping Editor
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Chris Jager is a seasoned journalist with over 15 years of experience in the Australian tech industry. He has contributed his expertise to top tech publications like PC World, Gizmodo, Business Insider, and Lifehacker Australia, where he also served as editor for five years. Chris holds a Bachelor of Communications in Journalism from the University of Western Sydney and is widely regarded as a trusted voice in the tech space. See full bio

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Chris has written 52 Finder guides across topics including:
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2 Responses

    ES's avatar
    ESAugust 20, 2025

    Is it easy to top up a travel esim if needing it for more than 30 days with ZenSIM?

      Chris Jager's headshotFinder
      ChrisAugust 21, 2025Finder

      Hi ES,

      You can top up your travel sim directly through the ZenSIM app with options for 10 or 30 days. (You can also use the app to check your data usage.)

      ZenSIM eSIMs are non-renewing, so you’ll need to activate top-ups manually.

      Have fun on your trip!

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