There are various methods to earn money online without any initial investment on a mobile device. Some of the most popular ways are:
- Online Surveys: Companies and market research firms are always looking for consumer opinions on various products and services. You can sign up to participate in online surveys and earn money in the form of cash, gift cards, or rewards.
- Micro-tasks: Websites like Amazon Mechanical Turk, Fiverr, and Upwork offer small online tasks that can be completed for a small amount of money. These tasks include things like data entry, image tagging, and transcribing audio recordings.
- Freelancing: If you have a specific skill or talent, such as writing, graphic design, or coding, you can offer your services on freelancing platforms like Upwork, Freelancer, or Fiverr and earn money from clients around the world.
- Affiliate Marketing: Affiliate marketing is a type of performance-based marketing in which a business rewards one or more affiliates for each visitor or customer brought about by the affiliate's own marketing efforts. You can make money by promoting a company's products or services on your own website or social media account and earning a commission on any sales made through your unique affiliate link.
- Selling products online: You can sell products online by using platforms like Amazon, eBay, and Etsy. You can sell products you make or products you buy wholesale and resell them.
- Online Tutoring: If you possess knowledge and expertise in a specific subject, you can provide online tutoring services to students and earn money in return. You can use platforms like Chegg, TutorMe, and VIPKid to find students who need help with their studies.

- Content Creation: If you have a talent for creating videos, photos, or written content, you can monetize your creations by uploading them to platforms like YouTube, Instagram, and TikTok. You can earn money through ad revenue, sponsored posts, and affiliate marketing.
- Online Gambling: Online gambling websites offer a variety of games that you can play for real money, including poker, blackjack, and slots. However, it's important to note that online gambling can be risky and it's important to gamble responsibly and only with money you can afford to lose.
- Online Trading: Online trading platforms allow you to buy and sell stocks, currency, and other assets. You can earn money through trading but it also carries a higher level of risk.
- App Development: If you have experience in app development, you can create and monetize your own mobile apps. You can sell your apps on the App Store or Google Play, or offer them for free and earn money through in-app purchases or advertising.
It's also worth mentioning that there are many online platforms that offer rewards for completing small tasks such as watching videos, downloading apps, and signing up for free trials. These rewards can be converted into cash or gift cards.

Lastly, note that you have to put effort and time to set up and promote these methods to earn money online without investment. Be patient and persistent in your efforts, and always conduct research before getting involved in any opportunity.
There are various methods to earn money online without any initial investment on a mobile device. Some of the most excellent ways are:
- Participating in online surveys and earning cash, gift cards, or rewards.
- Completing micro-tasks on platforms like Amazon Mechanical Turk, Fiverr, and Upwork.
- Offering freelancing services using your specific skills or talents on platforms like Upwork, Freelancer, or Fiverr.
- Promoting companies' products or services through affiliate marketing and earning a commission on any sales.
- Selling products online through platforms like Amazon, eBay, and Etsy.
- Providing online tutoring services to students through platforms like Chegg, TutorMe, and VIPKid.
- Monetizing your content creations by uploading them to platforms like YouTube, Instagram, and TikTok.
- Playing online gambling games on websites that offer real money options.
- Trading stocks, currency, and other assets on online trading platforms.
- Creating and monetizing your own mobile apps by selling them on the App Store or Google Play or earning through in-app purchases or advertising.
It's important to remember that earning money online takes effort and dedication and it may take some time before you start seeing significant income. Also, be cautious of scams and always research before investing time and effort.