How to use AI on your mobile phone: useful requests for text, study, and photos.
Por Rodrigo Pereira
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“Summarize this text” usually produces a different response than “separate the three main arguments and indicate where each one appears.” The application is the same; the request has changed. Using artificial intelligence on your cell phone starts by stating what task you want to complete and how you intend to check the result.
ChatGPT, DeepSeek, and Gemini can help you organize ideas, explain content, and prepare drafts. File, image, voice, and search capabilities vary depending on the service, account, and plan. This guide uses practical examples that you can adapt without relying on the name of a specific model.
Choose a small task to start with.
Instead of asking AI to organize your entire life, choose a specific problem: rewriting a message, understanding a paragraph, or turning notes into a list. You can more easily assess the quality of the response when you are familiar with the source material.
A first step could be to create a work message written by you. Remove names and confidential information, paste the text, and ask for a clearer version. Compare it line by line to identify if the tool altered a date, added a promise, or changed the desired tone.
- Define the outcome: message, table, explanation, or script.
- Provide the necessary context for the task.
- Specify the desired size, target audience, and format.
- Specify which information should remain the same.
- Set aside a step to review the answer.
ChatGPT, DeepSeek, and Gemini: where to get started?
OpenAI's ChatGPT offers conversation and tools that may include file and image analysis, depending on account access and limits. On your mobile phone, install the official app and check the developer in the app store. Avoid choosing a different app just because it uses a similar name or appears first in an advertisement.
DeepSeek also offers a conversation assistant. Use a concrete task to assess the clarity of the explanation and the quality of the text in Portuguese. Don't assume it has the same integrations, file formats, or limitations as another service.
AI assistant for questions, explanations, and text production.
Gemini is Google's assistant and can offer interaction with compatible content and services. Enabled functions depend on account, region, and configuration. See the [link/resource]. Gemini's help with file transfers If the task requires a specific document.
Assemble an order with four parts.
A useful structure combines task, context, criteria, and format. For example: “Rewrite the message below for a client awaiting delivery. Preserve the given date, use a friendly tone, and limit the response to two paragraphs. Do not add discounts or new promises.” Then, paste the text.
This organization doesn't require technical language. You're explaining the work as you would to someone unfamiliar with the situation. If the answer is too generic, add the missing detail, such as target audience, objective, or constraints, instead of simply asking for improvement.
| Part of the request | Example |
|---|---|
| Task | Turn these notes into an action list. |
| Context | These are records from a planning meeting. |
| Criterion | Don't invent responsibilities or dates. |
| Format | Use columns for action, person responsible, and deadline. |
If data is missing, ask the tool to mark it as "not informed." This instruction helps to make gaps visible, but it doesn't eliminate the need for verification. The AI can still misinterpret a sentence or attribute information to the wrong person.
Study: Turn explanations into questions
To study a topic, ask for an explanation appropriate to your level and a solved example. A possible request is: “Explain this concept to someone who is a beginner. Then, create three application questions and wait for my answer before presenting the solution.”
Answering before looking at the answer key helps you understand what you've grasped. If you get it wrong, ask the tool to show you the point in your reasoning that needs review. Compare your explanation with the course material, because a confident answer might contain a conceptual error or use a different convention.
To keep studying organized, the reading and note-taking apps They help to save excerpts, questions, and references. Also, record the original source. An AI-generated summary does not replace identifying the book, article, or lecture from which the information came.
In assessments, follow the institution's rules regarding the use of AI and authorship. A good application is to review the clarity of a text you have written or to create additional exercises. Submitting a generated answer without understanding the content does not address the learning objective the activity aims to assess.
PDFs: ask for location, not just summary.
When the attachment feature is available, send a document that you have permission to share. Request a specific task, such as locating requirements, comparing sections, or summarizing a chapter. Long files and low-quality scans can make it difficult to read and retrieve details.
A helpful request is: “List the documents required in this tender and indicate the corresponding section or page. If you cannot locate an item, state that you could not find it. Do not supplement the list with requirements from other tenders.” Open the PDF to verify each reference before proceeding.
Documents with charts, complex tables, or scanned pages require extra attention. Support for visual elements may vary by feature and plan. If the response omits a table, don't assume the information is missing: check the page and provide a legible clipping when the application allows it.
Photos: describe what you want to observe.
An image can be used to transcribe a notice, organize visible items, or suggest a visual composition. When attaching it, specify which detail is important. “Transcribe the times on this poster and mark the illegible sections” is more verifiable than asking for a broad interpretation of the entire scene.
Check numbers, names, and units in the original document. Reflections, small print, and perspective can lead to misreading. If you are unsure about information that could change a decision, take another photo or consult the source directly. Do not use an assumption from the tool to complete a dose, technical measurement, or bank account number.
Avoid sending images with documents, third-party faces, or unnecessary personal data. Crop the relevant area and review what remains visible in the background. A photo of a piece of paper on a desk might include correspondence and screens that are not part of the task.
Messages and scripts: preserve your intention.
To respond to an invitation, you can ask: “Write a short reply thanking them and declining due to unavailability. Don't invent a reason and don't suggest another date.” This restriction prevents the draft from trying to be helpful by adding a commitment you don't want to make.
For a video, provide the theme, audience, and approximate duration. Ask for an opening, a sequence of scenes, and the spoken text. Review the script aloud: a sentence that works in writing may be too long for speech and need cutting.
During the assembly stage, the guide of video editing on mobile phone It shows how to organize cuts, audio, and subtitles. AI can prepare the draft, but reviewing the exported video is still necessary to check synchronization, readability, and on-screen information.
Travel and shopping: separate ideas from current data.
An AI can suggest a route structure, group interests, and organize a list of items. Opening hours, prices, availability, and entry rules need to be checked. If the tool searches, open the presented sources and see if they match the desired city, date, and service.
A more precise request would be: “Organize two days of sightseeing based on these places I've already chosen. Group those that are close together, reserve time for lunch, and indicate which times I need to confirm.” This way, the result becomes a consultation plan, instead of a sequence of assumed reservations.
To compare products, provide verified specifications and state which criteria matter. Don't ask for a recommendation based solely on similar names. Versions, capacity, and region can change the characteristics of the same device, and the tool may confuse models.
Check the calculations, references, and statements.
- Separate verifiable facts from writing suggestions.
- Check the original material for names, dates, values, and units.
- Open the cited sources and look for the corresponding information.
- Redo the relevant calculations on a calculator.
- Review the result before copying, sending, or publishing.
A formal-looking reference may not exist or may not support the claim. Asking for sources is helpful, but it's not the same as verifying them. Look for the title and the original passage, especially when the answer involves a rule, a study, or information that may have changed.
The guide to measurement and calculation applications It helps distinguish estimates from verifiable measurements and accounts. In medical, legal, or financial decisions, use AI to organize questions and documents, evaluating sources and professionals appropriate to the case.
Privacy and account limits
Review the service's data controls before sending personal content. In ChatGPT, settings include control over the use of conversations to improve templates; this is different from making any conversation confidential by contract. Rules and retention vary by product and account type.
O Gemini privacy center This explains how conversations and files are handled. DeepSeek's policy, however, states that personal data is processed and stored in China. Review these terms and conditions and your organization's rules before sharing work documents.
Free quotas, tools, and plans change. If a limit appears, read which function has been restricted and when access will be restored. Don't subscribe to a plan based solely on its name: check if the feature you need is included and if the cost corresponds to your usage frequency.
Save the orders that worked.
After reviewing a good response, save the request in a note with fields that you can replace. For example, keep the instruction to preserve dates and only change the message text. This helps to repeat a frequent task without rebuilding the entire explanation, but each new piece of content still needs to be checked.
Identify the request template by its purpose, such as "customer response" or "summary review." Do not include real personal data in the saved example. If the application changes and the result no longer meets the objective, adjust the criteria instead of assuming that the same instruction will always produce an identical response.
When comparing versions, note which change resolved the problem. This record transforms the experience into a procedure that you can evaluate and adapt.
Common questions
Do I need to write orders in English?
No. You can explain the task in Portuguese and ask for the answer in the same language. Clear context and criteria are usually more helpful than translating a vague request.
Which of the three apps is the best?
It depends on the task and the resources available in the account. Compare using the same material and criteria, such as clarity, fidelity to the original, and ease of checking the answer.
Can AI read any entire PDF?
There is no guarantee of that. Size, file quality, visual elements, and service limitations all play a role. Check the relevant sections in the original document.
Can I copy the answer directly?
Review beforehand. The tool can alter facts, create references, or add commitments. In messages and posts, you need to check if the content expresses your intention.
Choose a short text, state the desired outcome, and compare the response to the original. Use this first task to learn how to ask for and revise.
